129457012474 has 4 divisors (see below), whose sum is σ = 194185518714. Its totient is φ = 64728506236.

The previous prime is 129457012459. The next prime is 129457012493. The reversal of 129457012474 is 474210754921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 113087601225 + 16369411249 = 336285^2 + 127943^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32364253117 + ... + 32364253120.

Almost surely, 2^129457012474 is an apocalyptic number.

129457012474 is a deficient number, since it is larger than the sum of its proper divisors (64728506240).

129457012474 is an equidigital number, since it uses as much as digits as its factorization.

129457012474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64728506239.

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 129457012474 in words is "one hundred twenty-nine billion, four hundred fifty-seven million, twelve thousand, four hundred seventy-four".