129464250 has 32 divisors (see below), whose sum is σ = 323144640. Its totient is φ = 34523600.

The previous prime is 129464249. The next prime is 129464267. The reversal of 129464250 is 52464921.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85560 + ... + 87059.

It is an arithmetic number, because the mean of its divisors is an integer number (10098270).

Almost surely, 2^129464250 is an apocalyptic number.

129464250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129464250 is an abundant number, since it is smaller than the sum of its proper divisors (193680390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129464250 is a wasteful number, since it uses less digits than its factorization.

129464250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172639 (or 172629 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 129464250 is about 11378.2358034978. The cubic root of 129464250 is about 505.8828461193.

The spelling of 129464250 in words is "one hundred twenty-nine million, four hundred sixty-four thousand, two hundred fifty".