139878234400 has 36 divisors (see below), whose sum is σ = 341477741682. Its totient is φ = 55951293440.

The previous prime is 139878234383. The next prime is 139878234443. The reversal of 139878234400 is 4432878931.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 137056924944 + 2821309456 = 370212^2 + 53116^2 .

It is a super-2 number, since 2×139878234400² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 87423097 + ... + 87424696.

Almost surely, 2^139878234400 is an apocalyptic number.

139878234400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139878234400 is an abundant number, since it is smaller than the sum of its proper divisors (201599507282).

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

139878234400 is a wasteful number, since it uses less digits than its factorization.

139878234400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174847813 (or 174847800 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 139878234400 in words is "one hundred thirty-nine billion, eight hundred seventy-eight million, two hundred thirty-four thousand, four hundred".