124989689 has 16 divisors (see below), whose sum is σ = 140241024. Its totient is φ = 110409600.

The previous prime is 124989673. The next prime is 124989701. The reversal of 124989689 is 986989421.

It is a cyclic number.

It is not a de Polignac number, because 124989689 - 2⁴ = 124989673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (124989629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167852 + ... + 168594.

It is an arithmetic number, because the mean of its divisors is an integer number (8765064).

Almost surely, 2^124989689 is an apocalyptic number.

It is an amenable number.

124989689 is a deficient number, since it is larger than the sum of its proper divisors (15251335).

124989689 is a wasteful number, since it uses less digits than its factorization.

124989689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168.

The product of its digits is 2239488, while the sum is 56.

The square root of 124989689 is about 11179.8787560510. The cubic root of 124989689 is about 499.9862516220.

The spelling of 124989689 in words is "one hundred twenty-four million, nine hundred eighty-nine thousand, six hundred eighty-nine".