129760442 has 16 divisors (see below), whose sum is σ = 230117760. Its totient is φ = 53693808.

The previous prime is 129760417. The next prime is 129760447. The reversal of 129760442 is 244067921.

It is not an unprimeable number, because it can be changed into a prime (129760447) 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, 159398 + ... + 160209.

It is an arithmetic number, because the mean of its divisors is an integer number (14382360).

Almost surely, 2^129760442 is an apocalyptic number.

129760442 is a deficient number, since it is larger than the sum of its proper divisors (100357318).

129760442 is a wasteful number, since it uses less digits than its factorization.

129760442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319645.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 129760442 is about 11391.2440936010. The cubic root of 129760442 is about 506.2683433479.

The spelling of 129760442 in words is "one hundred twenty-nine million, seven hundred sixty thousand, four hundred forty-two".