129400041400 has 48 divisors (see below), whose sum is σ = 343834399440. Its totient is φ = 44365728000.

The previous prime is 129400041389. The next prime is 129400041479. The reversal of 129400041400 is 4140004921.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 46212901 + ... + 46215700.

It is an arithmetic number, because the mean of its divisors is an integer number (7163216655).

Almost surely, 2^129400041400 is an apocalyptic number.

129400041400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129400041400 is an abundant number, since it is smaller than the sum of its proper divisors (214434358040).

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

129400041400 is a wasteful number, since it uses less digits than its factorization.

129400041400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92428624 (or 92428615 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 129400041400 in words is "one hundred twenty-nine billion, four hundred million, forty-one thousand, four hundred".