129941376 has 32 divisors (see below), whose sum is σ = 345157800. Its totient is φ = 43313664.

The previous prime is 129941369. The next prime is 129941377. The reversal of 129941376 is 673149921.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×129941376² = 33769522393546752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129941377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168811 + ... + 169578.

Almost surely, 2^129941376 is an apocalyptic number.

129941376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129941376 is an abundant number, since it is smaller than the sum of its proper divisors (215216424).

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

129941376 is an equidigital number, since it uses as much as digits as its factorization.

129941376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338406 (or 338394 counting only the distinct ones).

The product of its digits is 81648, while the sum is 42.

The square root of 129941376 is about 11399.1831286281. The cubic root of 129941376 is about 506.5035424392.

The spelling of 129941376 in words is "one hundred twenty-nine million, nine hundred forty-one thousand, three hundred seventy-six".