129321464 has 16 divisors (see below), whose sum is σ = 246453720. Its totient is φ = 63600480.

The previous prime is 129321463. The next prime is 129321509. The reversal of 129321464 is 464123921.

It is a super-2 number, since 2×129321464² = 33448082102206592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 129321464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129321461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132014 + ... + 132989.

Almost surely, 2^129321464 is an apocalyptic number.

It is an amenable number.

129321464 is a deficient number, since it is larger than the sum of its proper divisors (117132256).

129321464 is a wasteful number, since it uses less digits than its factorization.

129321464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265070 (or 265066 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 129321464 is about 11371.9595496994. The cubic root of 129321464 is about 505.6967984663.

The spelling of 129321464 in words is "one hundred twenty-nine million, three hundred twenty-one thousand, four hundred sixty-four".