139260031250 has 42 divisors (see below), whose sum is σ = 261232964769. Its totient is φ = 55677625000.

The previous prime is 139260031223. The next prime is 139260031279. The reversal of 139260031250 is 52130062931.

It can be written as a sum of positive squares in 4 ways, for example, as 23747734609 + 115512296641 = 154103^2 + 339871^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=263875.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 65967695 + ... + 65969805.

Almost surely, 2^139260031250 is an apocalyptic number.

139260031250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139260031250 is a deficient number, since it is larger than the sum of its proper divisors (121972933519).

139260031250 is an frugal number, since it uses more digits than its factorization.

139260031250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4254 (or 2118 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

Multiplying 139260031250 by its sum of digits (32), we get a square (4456321000000 = 2111000²).

The spelling of 139260031250 in words is "one hundred thirty-nine billion, two hundred sixty million, thirty-one thousand, two hundred fifty".