4200312421 has 4 divisors (see below), whose sum is σ = 4200728332. Its totient is φ = 4199896512.

The previous prime is 4200312401. The next prime is 4200312427. The reversal of 4200312421 is 1242130024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2853055396 + 1347257025 = 53414^2 + 36705^2 .

It is a cyclic number.

It is not a de Polignac number, because 4200312421 - 2²⁷ = 4066094693 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 (4200312427) 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, 192420 + ... + 213133.

It is an arithmetic number, because the mean of its divisors is an integer number (1050182083).

Almost surely, 2^4200312421 is an apocalyptic number.

It is an amenable number.

4200312421 is a deficient number, since it is larger than the sum of its proper divisors (415911).

4200312421 is a wasteful number, since it uses less digits than its factorization.

4200312421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415910.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 4200312421 is about 64809.8173196006. The cubic root of 4200312421 is about 1613.4686505081.

Adding to 4200312421 its reverse (1242130024), we get a palindrome (5442442445).

The spelling of 4200312421 in words is "four billion, two hundred million, three hundred twelve thousand, four hundred twenty-one".