4972432421 has 4 divisors (see below), whose sum is σ = 5424471744. Its totient is φ = 4520393100.

The previous prime is 4972432363. The next prime is 4972432447. The reversal of 4972432421 is 1242342794.

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 4972432421 - 2²⁶ = 4905323557 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 (4972032421) 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, 226019645 + ... + 226019666.

It is an arithmetic number, because the mean of its divisors is an integer number (1356117936).

Almost surely, 2^4972432421 is an apocalyptic number.

It is an amenable number.

4972432421 is a deficient number, since it is larger than the sum of its proper divisors (452039323).

4972432421 is a wasteful number, since it uses less digits than its factorization.

4972432421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452039322.

The product of its digits is 96768, while the sum is 38.

The square root of 4972432421 is about 70515.4764643904. The cubic root of 4972432421 is about 1706.8274934187.

The spelling of 4972432421 in words is "four billion, nine hundred seventy-two million, four hundred thirty-two thousand, four hundred twenty-one".