139371012 has 72 divisors (see below), whose sum is σ = 389817792. Its totient is φ = 41630400.

The previous prime is 139370983. The next prime is 139371073. The reversal of 139371012 is 210173931.

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, 25638 + ... + 30594.

It is an arithmetic number, because the mean of its divisors is an integer number (5414136).

Almost surely, 2^139371012 is an apocalyptic number.

139371012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139371012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194908896).

139371012 is an abundant number, since it is smaller than the sum of its proper divisors (250446780).

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

139371012 is a wasteful number, since it uses less digits than its factorization.

139371012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5049 (or 5044 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 139371012 is about 11805.5500507177. The cubic root of 139371012 is about 518.4706197374.

The spelling of 139371012 in words is "one hundred thirty-nine million, three hundred seventy-one thousand, twelve".