129457252 has 6 divisors (see below), whose sum is σ = 226550198. Its totient is φ = 64728624.

The previous prime is 129457249. The next prime is 129457277. The reversal of 129457252 is 252754921.

It can be written as a sum of positive squares in only one way, i.e., 109956196 + 19501056 = 10486^2 + 4416^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16182153 + ... + 16182160.

Almost surely, 2^129457252 is an apocalyptic number.

It is an amenable number.

129457252 is a deficient number, since it is larger than the sum of its proper divisors (97092946).

129457252 is a wasteful number, since it uses less digits than its factorization.

129457252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32364317 (or 32364315 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 129457252 is about 11377.9282824247. The cubic root of 129457252 is about 505.8737310368.

The spelling of 129457252 in words is "one hundred twenty-nine million, four hundred fifty-seven thousand, two hundred fifty-two".