139287124 has 12 divisors (see below), whose sum is σ = 244660500. Its totient is φ = 69384128.

The previous prime is 139287121. The next prime is 139287131. The reversal of 139287124 is 421782931.

It can be written as a sum of positive squares in 2 ways, for example, as 6300100 + 132987024 = 2510^2 + 11532^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139287121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63649 + ... + 65800.

It is an arithmetic number, because the mean of its divisors is an integer number (20388375).

Almost surely, 2^139287124 is an apocalyptic number.

It is an amenable number.

139287124 is a deficient number, since it is larger than the sum of its proper divisors (105373376).

139287124 is a wasteful number, since it uses less digits than its factorization.

139287124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129722 (or 129720 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 139287124 is about 11801.9966107435. The cubic root of 139287124 is about 518.3665756421.

The spelling of 139287124 in words is "one hundred thirty-nine million, two hundred eighty-seven thousand, one hundred twenty-four".