139240131 has 8 divisors (see below), whose sum is σ = 186061584. Its totient is φ = 92622720.

The previous prime is 139240121. The next prime is 139240147. The reversal of 139240131 is 131042931.

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

It is not a de Polignac number, because 139240131 - 2⁶ = 139240067 is a prime.

It is a super-2 number, since 2×139240131² = 38775628161794322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139240121) 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 7 ways as a sum of consecutive naturals, for example, 49410 + ... + 52151.

It is an arithmetic number, because the mean of its divisors is an integer number (23257698).

Almost surely, 2^139240131 is an apocalyptic number.

139240131 is a deficient number, since it is larger than the sum of its proper divisors (46821453).

139240131 is a wasteful number, since it uses less digits than its factorization.

139240131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102021.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 139240131 is about 11800.0055508462. The cubic root of 139240131 is about 518.3082731951.

The spelling of 139240131 in words is "one hundred thirty-nine million, two hundred forty thousand, one hundred thirty-one".