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145143130 = 25112119953
BaseRepresentation
bin10001010011010…
…11010101011010
3101010010000221111
420221223111122
5244124040010
622222530534
73411460546
oct1051532532
9333100844
10145143130
1174a25200
1240736a4a
13240bb312
14153c2a26
15cb2058a
hex8a6b55a

145143130 has 24 divisors (see below), whose sum is σ = 287169876. Its totient is φ = 52778880.

The previous prime is 145143121. The next prime is 145143139. The reversal of 145143130 is 31341541.

145143130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (145143121) and next prime (145143139).

It can be written as a sum of positive squares in 2 ways, for example, as 140351409 + 4791721 = 11847^2 + 2189^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (145143139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58767 + ... + 61186.

Almost surely, 2145143130 is an apocalyptic number.

145143130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145143130 is a deficient number, since it is larger than the sum of its proper divisors (142026746).

145143130 is a wasteful number, since it uses less digits than its factorization.

145143130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119982 (or 119971 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 145143130 is about 12047.5362626555. The cubic root of 145143130 is about 525.5315915600.

Adding to 145143130 its reverse (31341541), we get a palindrome (176484671).

The spelling of 145143130 in words is "one hundred forty-five million, one hundred forty-three thousand, one hundred thirty".

Divisors: 1 2 5 10 11 22 55 110 121 242 605 1210 119953 239906 599765 1199530 1319483 2638966 6597415 13194830 14514313 29028626 72571565 145143130