124424721903889 has 27 divisors (see below), whose sum is σ = 140187106884657. Its totient is φ = 110350058702400.

The previous prime is 124424721903847. The next prime is 124424721903901. The reversal of 124424721903889 is 988309127424421.

The square root of 124424721903889 is 11154583.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 101214565697025 + 23210156206864 = 10060545^2 + 4817692^2 .

It is not a de Polignac number, because 124424721903889 - 2¹³ = 124424721895697 is a prime.

It is a super-2 number, since 2×124424721903889² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 124424721903889.

It is not an unprimeable number, because it can be changed into a prime (124424721903829) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5030704567 + ... + 5030729299.

Almost surely, 2^{124424721903889} is an apocalyptic number.

124424721903889 is the 11154583-rd square number.

124424721903889 is the 5577292-nd centered octagonal number.

It is an amenable number.

124424721903889 is a deficient number, since it is larger than the sum of its proper divisors (15762384980768).

124424721903889 is an frugal number, since it uses more digits than its factorization.

124424721903889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49570 (or 24785 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 64.

The spelling of 124424721903889 in words is "one hundred twenty-four trillion, four hundred twenty-four billion, seven hundred twenty-one million, nine hundred three thousand, eight hundred eighty-nine".