2400421312421 has 4 divisors (see below), whose sum is σ = 2618641431744. Its totient is φ = 2182201193100.

The previous prime is 2400421312417. The next prime is 2400421312423. The reversal of 2400421312421 is 1242131240042.

2400421312421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2400421312421 - 2² = 2400421312417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2400421312423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109110059645 + ... + 109110059666.

It is an arithmetic number, because the mean of its divisors is an integer number (654660357936).

Almost surely, 2^{2400421312421} is an apocalyptic number.

It is an amenable number.

2400421312421 is a deficient number, since it is larger than the sum of its proper divisors (218220119323).

2400421312421 is a wasteful number, since it uses less digits than its factorization.

2400421312421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218220119322.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 2400421312421 its reverse (1242131240042), we get a palindrome (3642552552463).

The spelling of 2400421312421 in words is "two trillion, four hundred billion, four hundred twenty-one million, three hundred twelve thousand, four hundred twenty-one".