374531421 has 20 divisors (see below), whose sum is σ = 549373760. Its totient is φ = 226962120.

The previous prime is 374531413. The next prime is 374531431. The reversal of 374531421 is 124135473.

374531421 = 1699² + 1700² + ... + 1819².

It is a happy number.

It is not a de Polignac number, because 374531421 - 2³ = 374531413 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (374531411) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 39660 + ... + 48186.

It is an arithmetic number, because the mean of its divisors is an integer number (27468688).

Almost surely, 2^374531421 is an apocalyptic number.

It is an amenable number.

374531421 is a deficient number, since it is larger than the sum of its proper divisors (174842339).

374531421 is an frugal number, since it uses more digits than its factorization.

374531421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8574 (or 8541 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 374531421 is about 19352.8142914668. The cubic root of 374531421 is about 720.8243009133.

Adding to 374531421 its reverse (124135473), we get a palindrome (498666894).

The spelling of 374531421 in words is "three hundred seventy-four million, five hundred thirty-one thousand, four hundred twenty-one".