129361400 has 48 divisors (see below), whose sum is σ = 343735440. Its totient is φ = 44352000.

The previous prime is 129361399. The next prime is 129361423. The reversal of 129361400 is 4163921.

It is a self number, because there is not a number n which added to its sum of digits gives 129361400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44801 + ... + 47600.

It is an arithmetic number, because the mean of its divisors is an integer number (7161155).

Almost surely, 2^129361400 is an apocalyptic number.

129361400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129361400 is an abundant number, since it is smaller than the sum of its proper divisors (214374040).

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

129361400 is a wasteful number, since it uses less digits than its factorization.

129361400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92424 (or 92415 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 129361400 is about 11373.7153120693. The cubic root of 129361400 is about 505.7488481627.

The spelling of 129361400 in words is "one hundred twenty-nine million, three hundred sixty-one thousand, four hundred".