203124202421 has 8 divisors (see below), whose sum is σ = 232156967424. Its totient is φ = 174095192880.

The previous prime is 203124202397. The next prime is 203124202451. The reversal of 203124202421 is 124202421302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 203124202421 - 2¹⁸ = 203123940277 is a prime.

It is a super-2 number, since 2×203124202421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203124202451) 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, 821990 + ... + 1040151.

It is an arithmetic number, because the mean of its divisors is an integer number (29019620928).

Almost surely, 2^203124202421 is an apocalyptic number.

It is an amenable number.

203124202421 is a deficient number, since it is larger than the sum of its proper divisors (29032765003).

203124202421 is a wasteful number, since it uses less digits than its factorization.

203124202421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877731.

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

Adding to 203124202421 its reverse (124202421302), we get a palindrome (327326623723).

The spelling of 203124202421 in words is "two hundred three billion, one hundred twenty-four million, two hundred two thousand, four hundred twenty-one".