124989893 has 4 divisors (see below), whose sum is σ = 142845600. Its totient is φ = 107134188.

The previous prime is 124989883. The next prime is 124989937. The reversal of 124989893 is 398989421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 124989893 - 2⁶ = 124989829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124989883) 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, 8927843 + ... + 8927856.

It is an arithmetic number, because the mean of its divisors is an integer number (35711400).

Almost surely, 2^124989893 is an apocalyptic number.

It is an amenable number.

124989893 is a deficient number, since it is larger than the sum of its proper divisors (17855707).

124989893 is an equidigital number, since it uses as much as digits as its factorization.

124989893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17855706.

The product of its digits is 1119744, while the sum is 53.

The square root of 124989893 is about 11179.8878795809. The cubic root of 124989893 is about 499.9865236368.

The spelling of 124989893 in words is "one hundred twenty-four million, nine hundred eighty-nine thousand, eight hundred ninety-three".