139021124 has 24 divisors (see below), whose sum is σ = 269148096. Its totient is φ = 62300000.

The previous prime is 139021123. The next prime is 139021139. The reversal of 139021124 is 421120931.

It is a self number, because there is not a number n which added to its sum of digits gives 139021124.

It is not an unprimeable number, because it can be changed into a prime (139021123) 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, 19127 + ... + 25374.

It is an arithmetic number, because the mean of its divisors is an integer number (11214504).

Almost surely, 2^139021124 is an apocalyptic number.

It is an amenable number.

139021124 is a deficient number, since it is larger than the sum of its proper divisors (130126972).

139021124 is a wasteful number, since it uses less digits than its factorization.

139021124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44587 (or 44585 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 139021124 is about 11790.7219456656. The cubic root of 139021124 is about 518.0363862874.

The spelling of 139021124 in words is "one hundred thirty-nine million, twenty-one thousand, one hundred twenty-four".