139606057 has 8 divisors (see below), whose sum is σ = 147981600. Its totient is φ = 131248704.

The previous prime is 139606043. The next prime is 139606063. The reversal of 139606057 is 750606931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139606057 - 2¹⁵ = 139573289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139606007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13294 + ... + 21352.

It is an arithmetic number, because the mean of its divisors is an integer number (18497700).

Almost surely, 2^139606057 is an apocalyptic number.

139606057 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

139606057 is a deficient number, since it is larger than the sum of its proper divisors (8375543).

139606057 is a wasteful number, since it uses less digits than its factorization.

139606057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9095.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 139606057 is about 11815.5007088147. The cubic root of 139606057 is about 518.7619177211.

It can be divided in two parts, 1396060 and 57, that multiplied together give a triangular number (79575420 = T₁₂₆₁₅).

The spelling of 139606057 in words is "one hundred thirty-nine million, six hundred six thousand, fifty-seven".