7042372221 has 4 divisors (see below), whose sum is σ = 9389829632. Its totient is φ = 4694914812.

The previous prime is 7042372201. The next prime is 7042372223. The reversal of 7042372221 is 1222732407.

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 not a de Polignac number, because 7042372221 - 2³⁰ = 5968630397 is a prime.

It is a super-2 number, since 2×7042372221² = 99190012998224945682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7042372223) 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, 1173728701 + ... + 1173728706.

It is an arithmetic number, because the mean of its divisors is an integer number (2347457408).

Almost surely, 2^7042372221 is an apocalyptic number.

It is an amenable number.

7042372221 is a deficient number, since it is larger than the sum of its proper divisors (2347457411).

7042372221 is a wasteful number, since it uses less digits than its factorization.

7042372221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347457410.

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 7042372221 is about 83918.8430628068. The cubic root of 7042372221 is about 1916.7831896124.

The spelling of 7042372221 in words is "seven billion, forty-two million, three hundred seventy-two thousand, two hundred twenty-one".