374187523421 has 4 divisors (see below), whose sum is σ = 387090541500. Its totient is φ = 361284505344.

The previous prime is 374187523397. The next prime is 374187523471. The reversal of 374187523421 is 124325781473.

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 262640875225 + 111546648196 = 512485^2 + 333986^2 .

It is a cyclic number.

It is not a de Polignac number, because 374187523421 - 2²⁶ = 374120414557 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 (374187523471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6451508996 + ... + 6451509053.

It is an arithmetic number, because the mean of its divisors is an integer number (96772635375).

Almost surely, 2^374187523421 is an apocalyptic number.

It is an amenable number.

374187523421 is a deficient number, since it is larger than the sum of its proper divisors (12903018079).

374187523421 is a wasteful number, since it uses less digits than its factorization.

374187523421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12903018078.

The product of its digits is 1128960, while the sum is 47.

The spelling of 374187523421 in words is "three hundred seventy-four billion, one hundred eighty-seven million, five hundred twenty-three thousand, four hundred twenty-one".