124400421 has 8 divisors (see below), whose sum is σ = 184296960. Its totient is φ = 82933596.

The previous prime is 124400371. The next prime is 124400443. The reversal of 124400421 is 124004421.

124400421 is a `hidden beast` number, since 1 + 244 + 0 + 0 + 421 = 666.

It is not a de Polignac number, because 124400421 - 2¹⁰ = 124399397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124400394 and 124400403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124400461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2303685 + ... + 2303738.

It is an arithmetic number, because the mean of its divisors is an integer number (23037120).

Almost surely, 2^124400421 is an apocalyptic number.

It is an amenable number.

124400421 is a deficient number, since it is larger than the sum of its proper divisors (59896539).

124400421 is an equidigital number, since it uses as much as digits as its factorization.

124400421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4607432 (or 4607426 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 124400421 is about 11153.4936679051. The cubic root of 124400421 is about 499.1992797119.

Adding to 124400421 its reverse (124004421), we get a palindrome (248404842).

The spelling of 124400421 in words is "one hundred twenty-four million, four hundred thousand, four hundred twenty-one".