40429123985400 has 96 divisors (see below), whose sum is σ = 125411197686000. Its totient is φ = 10774139443200.

The previous prime is 40429123985323. The next prime is 40429123985449. The reversal of 40429123985400 is 458932192404.

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, 20820721 + ... + 22679520.

Almost surely, 2^{40429123985400} is an apocalyptic number.

40429123985400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40429123985400 is an abundant number, since it is smaller than the sum of its proper divisors (84982073700600).

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

40429123985400 is a wasteful number, since it uses less digits than its factorization.

40429123985400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43501809 (or 43501800 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 40429123985400 in words is "forty trillion, four hundred twenty-nine billion, one hundred twenty-three million, nine hundred eighty-five thousand, four hundred".