129453372 has 36 divisors (see below), whose sum is σ = 329053816. Its totient is φ = 42910560.

The previous prime is 129453371. The next prime is 129453397. The reversal of 129453372 is 273354921.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129453371) 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 11 ways as a sum of consecutive naturals, for example, 3418 + ... + 16449.

Almost surely, 2^129453372 is an apocalyptic number.

129453372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129453372 is an abundant number, since it is smaller than the sum of its proper divisors (199600444).

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

129453372 is a wasteful number, since it uses less digits than its factorization.

129453372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20058 (or 20053 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 129453372 is about 11377.7577755901. The cubic root of 129453372 is about 505.8686770913.

The spelling of 129453372 in words is "one hundred twenty-nine million, four hundred fifty-three thousand, three hundred seventy-two".