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130232442 = 23157138251
BaseRepresentation
bin1111100001100…
…11000001111010
3100002001111022210
413300303001322
5231314414232
620531155550
73140646264
oct760630172
9302044283
10130232442
116757061a
1237745bb6
1320c9a522
1413420b34
15b6775cc
hex7c3307a

130232442 has 16 divisors (see below), whose sum is σ = 262125792. Its totient is φ = 43134000.

The previous prime is 130232357. The next prime is 130232447. The reversal of 130232442 is 244232031.

It is not an unprimeable number, because it can be changed into a prime (130232447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68184 + ... + 70067.

It is an arithmetic number, because the mean of its divisors is an integer number (16382862).

Almost surely, 2130232442 is an apocalyptic number.

130232442 is an abundant number, since it is smaller than the sum of its proper divisors (131893350).

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

130232442 is a wasteful number, since it uses less digits than its factorization.

130232442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138413.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 130232442 is about 11411.9429546419. The cubic root of 130232442 is about 506.8814462405.

Adding to 130232442 its reverse (244232031), we get a palindrome (374464473).

The spelling of 130232442 in words is "one hundred thirty million, two hundred thirty-two thousand, four hundred forty-two".

Divisors: 1 2 3 6 157 314 471 942 138251 276502 414753 829506 21705407 43410814 65116221 130232442