139140724 has 24 divisors (see below), whose sum is σ = 265154400. Its totient is φ = 63635040.

The previous prime is 139140721. The next prime is 139140737. The reversal of 139140724 is 427041931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139140721) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 29362 + ... + 33769.

It is an arithmetic number, because the mean of its divisors is an integer number (11048100).

Almost surely, 2^139140724 is an apocalyptic number.

It is an amenable number.

139140724 is a deficient number, since it is larger than the sum of its proper divisors (126013676).

139140724 is a wasteful number, since it uses less digits than its factorization.

139140724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63183 (or 63181 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 139140724 is about 11795.7926397508. The cubic root of 139140724 is about 518.1848994323.

The spelling of 139140724 in words is "one hundred thirty-nine million, one hundred forty thousand, seven hundred twenty-four".