42729697400 has 48 divisors (see below), whose sum is σ = 106988595000. Its totient is φ = 15777118080.

The previous prime is 42729697397. The next prime is 42729697481. The reversal of 42729697400 is 479692724.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8214650 + ... + 8219849.

Almost surely, 2^42729697400 is an apocalyptic number.

42729697400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42729697400 is an abundant number, since it is smaller than the sum of its proper divisors (64258897600).

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

42729697400 is a wasteful number, since it uses less digits than its factorization.

42729697400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16434528 (or 16434519 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 42729697400 in words is "forty-two billion, seven hundred twenty-nine million, six hundred ninety-seven thousand, four hundred".