129401333400 has 96 divisors (see below), whose sum is σ = 401198942160. Its totient is φ = 34502307840.

The previous prime is 129401333357. The next prime is 129401333419. The reversal of 129401333400 is 4333104921.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8123844 + ... + 8139756.

Almost surely, 2^129401333400 is an apocalyptic number.

129401333400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129401333400 is an abundant number, since it is smaller than the sum of its proper divisors (271797608760).

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

129401333400 is a wasteful number, since it uses less digits than its factorization.

129401333400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29485 (or 29476 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The spelling of 129401333400 in words is "one hundred twenty-nine billion, four hundred one million, three hundred thirty-three thousand, four hundred".