124672639 has 16 divisors (see below), whose sum is σ = 153896512. Its totient is φ = 98350848.

The previous prime is 124672633. The next prime is 124672649. The reversal of 124672639 is 936276421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 124672639 - 2⁷ = 124672511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124672633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32107 + ... + 35779.

It is an arithmetic number, because the mean of its divisors is an integer number (9618532).

Almost surely, 2^124672639 is an apocalyptic number.

124672639 is a deficient number, since it is larger than the sum of its proper divisors (29223873).

124672639 is a wasteful number, since it uses less digits than its factorization.

124672639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066.

The product of its digits is 108864, while the sum is 40.

The square root of 124672639 is about 11165.6902607944. The cubic root of 124672639 is about 499.5631370794.

The spelling of 124672639 in words is "one hundred twenty-four million, six hundred seventy-two thousand, six hundred thirty-nine".