124636421 has 16 divisors (see below), whose sum is σ = 153783168. Its totient is φ = 98366400.

The previous prime is 124636411. The next prime is 124636429.

124636421 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124636421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124636429) 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, 40466 + ... + 43436.

It is an arithmetic number, because the mean of its divisors is an integer number (9611448).

Almost surely, 2^124636421 is an apocalyptic number.

It is an amenable number.

124636421 is a deficient number, since it is larger than the sum of its proper divisors (29146747).

124636421 is a wasteful number, since it uses less digits than its factorization.

124636421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452.

The product of its digits is 6912, while the sum is 29.

The square root of 124636421 is about 11164.0682996836. The cubic root of 124636421 is about 499.5147572313.

The spelling of 124636421 in words is "one hundred twenty-four million, six hundred thirty-six thousand, four hundred twenty-one".