2372145421 has 4 divisors (see below), whose sum is σ = 2496995200. Its totient is φ = 2247295644.

The previous prime is 2372145397. The next prime is 2372145449. The reversal of 2372145421 is 1245412732.

It is a happy number.

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 2372145421 - 2¹¹ = 2372143373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2372145481) 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, 62424861 + ... + 62424898.

It is an arithmetic number, because the mean of its divisors is an integer number (624248800).

Almost surely, 2^2372145421 is an apocalyptic number.

It is an amenable number.

2372145421 is a deficient number, since it is larger than the sum of its proper divisors (124849779).

2372145421 is a wasteful number, since it uses less digits than its factorization.

2372145421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124849778.

The product of its digits is 13440, while the sum is 31.

The square root of 2372145421 is about 48704.6755558437. The cubic root of 2372145421 is about 1333.6660722831. Note that the first 3 decimals are identical.

The spelling of 2372145421 in words is "two billion, three hundred seventy-two million, one hundred forty-five thousand, four hundred twenty-one".