139462138 has 16 divisors (see below), whose sum is σ = 212413824. Its totient is φ = 68664960.

The previous prime is 139462093. The next prime is 139462151. The reversal of 139462138 is 831264931.

It is a junction number, because it is equal to n+sod(n) for n = 139462097 and 139462106.

It is an unprimeable number.

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, 39231 + ... + 42637.

It is an arithmetic number, because the mean of its divisors is an integer number (13275864).

Almost surely, 2^139462138 is an apocalyptic number.

139462138 is a deficient number, since it is larger than the sum of its proper divisors (72951686).

139462138 is a wasteful number, since it uses less digits than its factorization.

139462138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3717.

The product of its digits is 31104, while the sum is 37.

The square root of 139462138 is about 11809.4088759768. The cubic root of 139462138 is about 518.5835936375.

The spelling of 139462138 in words is "one hundred thirty-nine million, four hundred sixty-two thousand, one hundred thirty-eight".