129253400 has 24 divisors (see below), whose sum is σ = 300514620. Its totient is φ = 51701280.

The previous prime is 129253381. The next prime is 129253417. The reversal of 129253400 is 4352921.

It is a self number, because there is not a number n which added to its sum of digits gives 129253400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 322934 + ... + 323333.

Almost surely, 2^129253400 is an apocalyptic number.

129253400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129253400 is an abundant number, since it is smaller than the sum of its proper divisors (171261220).

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

129253400 is a wasteful number, since it uses less digits than its factorization.

129253400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646283 (or 646274 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 129253400 is about 11368.9665317477. The cubic root of 129253400 is about 505.6080640672.

The spelling of 129253400 in words is "one hundred twenty-nine million, two hundred fifty-three thousand, four hundred".