124138620 has 72 divisors (see below), whose sum is σ = 377513136. Its totient is φ = 33019392.

The previous prime is 124138603. The next prime is 124138627. The reversal of 124138620 is 26831421.

124138620 is a `hidden beast` number, since 1 + 2 + 4 + 1 + 38 + 620 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124138627) 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, 106159 + ... + 107321.

It is an arithmetic number, because the mean of its divisors is an integer number (5243238).

Almost surely, 2^124138620 is an apocalyptic number.

124138620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124138620 is an abundant number, since it is smaller than the sum of its proper divisors (253374516).

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

124138620 is a wasteful number, since it uses less digits than its factorization.

124138620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771 (or 1766 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 124138620 is about 11141.7512088540. The cubic root of 124138620 is about 498.8488450519.

The spelling of 124138620 in words is "one hundred twenty-four million, one hundred thirty-eight thousand, six hundred twenty".