421243124 has 12 divisors (see below), whose sum is σ = 744474948. Its totient is φ = 208536000.

The previous prime is 421243103. The next prime is 421243157. The reversal of 421243124 is 421342124.

It can be written as a sum of positive squares in 2 ways, for example, as 203975524 + 217267600 = 14282^2 + 14740^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 421243124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520937 + ... + 521744.

It is an arithmetic number, because the mean of its divisors is an integer number (62039579).

Almost surely, 2^421243124 is an apocalyptic number.

It is an amenable number.

421243124 is a deficient number, since it is larger than the sum of its proper divisors (323231824).

421243124 is a wasteful number, since it uses less digits than its factorization.

421243124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042786 (or 1042784 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 421243124 is about 20524.2082429506. The cubic root of 421243124 is about 749.6253678618.

Adding to 421243124 its reverse (421342124), we get a palindrome (842585248).

The spelling of 421243124 in words is "four hundred twenty-one million, two hundred forty-three thousand, one hundred twenty-four".