129036472 has 32 divisors (see below), whose sum is σ = 248756400. Its totient is φ = 62726400.

The previous prime is 129036469. The next prime is 129036473. The reversal of 129036472 is 274630921.

It is a super-2 number, since 2×129036472² = 33300822212413568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129036473) 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, 41947 + ... + 44917.

Almost surely, 2^129036472 is an apocalyptic number.

It is an amenable number.

129036472 is a deficient number, since it is larger than the sum of its proper divisors (119719928).

129036472 is a wasteful number, since it uses less digits than its factorization.

129036472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127 (or 3123 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 129036472 is about 11359.4221684028. The cubic root of 129036472 is about 505.3250490416.

The spelling of 129036472 in words is "one hundred twenty-nine million, thirty-six thousand, four hundred seventy-two".