139665124 has 27 divisors (see below), whose sum is σ = 258787011. Its totient is φ = 65944440.

The previous prime is 139665109. The next prime is 139665151. The reversal of 139665124 is 421566931.

The square root of 139665124 is 11818.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 448929 + ... + 449239.

Almost surely, 2^139665124 is an apocalyptic number.

139665124 is the 11818-th square number.

It is an amenable number.

139665124 is a deficient number, since it is larger than the sum of its proper divisors (119121887).

139665124 is an equidigital number, since it uses as much as digits as its factorization.

139665124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 332 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The cubic root of 139665124 is about 518.8350697280.

The spelling of 139665124 in words is "one hundred thirty-nine million, six hundred sixty-five thousand, one hundred twenty-four".