139102572 has 72 divisors (see below), whose sum is σ = 397467840. Its totient is φ = 37648800.

The previous prime is 139102571. The next prime is 139102603. The reversal of 139102572 is 275201931.

It is not an unprimeable number, because it can be changed into a prime (139102571) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 4947 + ... + 17397.

Almost surely, 2^139102572 is an apocalyptic number.

139102572 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 139102572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198733920).

139102572 is an abundant number, since it is smaller than the sum of its proper divisors (258365268).

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

139102572 is a wasteful number, since it uses less digits than its factorization.

139102572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12491 (or 12482 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 139102572 is about 11794.1753420915. The cubic root of 139102572 is about 518.1375334829.

The spelling of 139102572 in words is "one hundred thirty-nine million, one hundred two thousand, five hundred seventy-two".