139813420 has 24 divisors (see below), whose sum is σ = 295092000. Its totient is φ = 55642752.

The previous prime is 139813361. The next prime is 139813433. The reversal of 139813420 is 24318931.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13585 + ... + 21544.

It is an arithmetic number, because the mean of its divisors is an integer number (12295500).

Almost surely, 2^139813420 is an apocalyptic number.

139813420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139813420 is an abundant number, since it is smaller than the sum of its proper divisors (155278580).

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

139813420 is a wasteful number, since it uses less digits than its factorization.

139813420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35337 (or 35335 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 139813420 is about 11824.2724934771. The cubic root of 139813420 is about 519.0186372677.

The spelling of 139813420 in words is "one hundred thirty-nine million, eight hundred thirteen thousand, four hundred twenty".