124202421 has 12 divisors (see below), whose sum is σ = 205032672. Its totient is φ = 70972776.

The previous prime is 124202417. The next prime is 124202431.

124202421 is a `hidden beast` number, since 1 + 2 + 420 + 242 + 1 = 666.

124202421 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 124202421 - 2² = 124202417 is a prime.

It is a super-2 number, since 2×124202421² = 30852482764522482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 124202394 and 124202403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124202401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 985671 + ... + 985796.

It is an arithmetic number, because the mean of its divisors is an integer number (17086056).

Almost surely, 2^124202421 is an apocalyptic number.

It is an amenable number.

124202421 is a deficient number, since it is larger than the sum of its proper divisors (80830251).

124202421 is a wasteful number, since it uses less digits than its factorization.

124202421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971480 (or 1971477 counting only the distinct ones).

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

The square root of 124202421 is about 11144.6139906235. The cubic root of 124202421 is about 498.9342914778.

It can be divided in two parts, 12420 and 2421, that added together give a palindrome (14841).

The spelling of 124202421 in words is "one hundred twenty-four million, two hundred two thousand, four hundred twenty-one".