124013989 has 6 divisors (see below), whose sum is σ = 136313030. Its totient is φ = 112739880.

The previous prime is 124013951. The next prime is 124014029. The reversal of 124013989 is 989310421.

It can be written as a sum of positive squares in only one way, i.e., 122213025 + 1800964 = 11055^2 + 1342^2 .

It is not a de Polignac number, because 124013989 - 2¹⁹ = 123489701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124013389) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 512334 + ... + 512575.

Almost surely, 2^124013989 is an apocalyptic number.

It is an amenable number.

124013989 is a deficient number, since it is larger than the sum of its proper divisors (12299041).

124013989 is a wasteful number, since it uses less digits than its factorization.

124013989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024931 (or 1024920 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 124013989 is about 11136.1568325882. The cubic root of 124013989 is about 498.6818466640.

The spelling of 124013989 in words is "one hundred twenty-four million, thirteen thousand, nine hundred eighty-nine".