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130123455 = 35711113997
BaseRepresentation
bin1111100000110…
…00011010111111
3100001211221211020
413300120122333
5231302422310
620524555223
73140013450
oct760303277
9301757736
10130123455
11674a6750
12376b2b13
1320c5ca37
14133d3127
15b655170
hex7c186bf

130123455 has 64 divisors (see below), whose sum is σ = 262130688. Its totient is φ = 53544960.

The previous prime is 130123453. The next prime is 130123471. The reversal of 130123455 is 554321031.

It is not a de Polignac number, because 130123455 - 21 = 130123453 is a prime.

It is a super-2 number, since 2×1301234552 = 33864227082274050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130123453) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 130017 + ... + 131013.

It is an arithmetic number, because the mean of its divisors is an integer number (4095792).

Almost surely, 2130123455 is an apocalyptic number.

130123455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

130123455 is an abundant number, since it is smaller than the sum of its proper divisors (132007233).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130123455 is a wasteful number, since it uses less digits than its factorization.

130123455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 130123455 is about 11407.1668261668. The cubic root of 130123455 is about 506.7400096293.

Adding to 130123455 its reverse (554321031), we get a palindrome (684444486).

The spelling of 130123455 in words is "one hundred thirty million, one hundred twenty-three thousand, four hundred fifty-five".

Divisors: 1 3 5 7 11 15 21 33 35 55 77 105 113 165 231 339 385 565 791 997 1155 1243 1695 2373 2991 3729 3955 4985 6215 6979 8701 10967 11865 14955 18645 20937 26103 32901 34895 43505 54835 76769 104685 112661 130515 164505 230307 337983 383845 563305 788627 1151535 1239271 1689915 2365881 3717813 3943135 6196355 8674897 11829405 18589065 26024691 43374485 130123455