129057436 has 6 divisors (see below), whose sum is σ = 225850520. Its totient is φ = 64528716.

The previous prime is 129057427. The next prime is 129057479. The reversal of 129057436 is 634750921.

It is a junction number, because it is equal to n+sod(n) for n = 129057395 and 129057404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16132176 + ... + 16132183.

Almost surely, 2^129057436 is an apocalyptic number.

It is an amenable number.

129057436 is a deficient number, since it is larger than the sum of its proper divisors (96793084).

129057436 is a wasteful number, since it uses less digits than its factorization.

129057436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32264363 (or 32264361 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 129057436 is about 11360.3448891308. The cubic root of 129057436 is about 505.3524135547.

The spelling of 129057436 in words is "one hundred twenty-nine million, fifty-seven thousand, four hundred thirty-six".