139357420 has 24 divisors (see below), whose sum is σ = 294190848. Its totient is φ = 55451120.

The previous prime is 139357417. The next prime is 139357487. The reversal of 139357420 is 24753931.

139357420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 729525 + ... + 729715.

It is an arithmetic number, because the mean of its divisors is an integer number (12257952).

Almost surely, 2^139357420 is an apocalyptic number.

139357420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139357420 is an abundant number, since it is smaller than the sum of its proper divisors (154833428).

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

139357420 is an frugal number, since it uses more digits than its factorization.

139357420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 139357420 is about 11804.9743752369. The cubic root of 139357420 is about 518.4537647696.

The spelling of 139357420 in words is "one hundred thirty-nine million, three hundred fifty-seven thousand, four hundred twenty".