124309881 has 6 divisors (see below), whose sum is σ = 179558730. Its totient is φ = 82873248.

The previous prime is 124309879. The next prime is 124309901. The reversal of 124309881 is 188903421.

It can be written as a sum of positive squares in only one way, i.e., 123010281 + 1299600 = 11091^2 + 1140^2 .

It is not a de Polignac number, because 124309881 - 2¹ = 124309879 is a prime.

It is a super-2 number, since 2×124309881² = 30905893028468322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (124309811) 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, 6906096 + ... + 6906113.

It is an arithmetic number, because the mean of its divisors is an integer number (29926455).

Almost surely, 2^124309881 is an apocalyptic number.

It is an amenable number.

124309881 is a deficient number, since it is larger than the sum of its proper divisors (55248849).

124309881 is a wasteful number, since it uses less digits than its factorization.

124309881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13812215 (or 13812212 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 124309881 is about 11149.4341112004. The cubic root of 124309881 is about 499.0781427363.

The spelling of 124309881 in words is "one hundred twenty-four million, three hundred nine thousand, eight hundred eighty-one".