139124124 has 72 divisors (see below), whose sum is σ = 378771120. Its totient is φ = 42895872.

The previous prime is 139124087. The next prime is 139124129. The reversal of 139124124 is 421421931.

It is a happy number.

139124124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139124129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34182 + ... + 38034.

It is an arithmetic number, because the mean of its divisors is an integer number (5260710).

Almost surely, 2^139124124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139124124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189385560).

139124124 is an abundant number, since it is smaller than the sum of its proper divisors (239646996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139124124 is a wasteful number, since it uses less digits than its factorization.

139124124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939 (or 3934 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 139124124 is about 11795.0889780451. The cubic root of 139124124 is about 518.1642914915.

The spelling of 139124124 in words is "one hundred thirty-nine million, one hundred twenty-four thousand, one hundred twenty-four".