722180042 has 8 divisors (see below), whose sum is σ = 1083634500. Its totient is φ = 360968544.

The previous prime is 722180029. The next prime is 722180047. The reversal of 722180042 is 240081227.

It can be written as a sum of positive squares in 2 ways, for example, as 645109201 + 77070841 = 25399^2 + 8779^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 722179993 and 722180020.

It is not an unprimeable number, because it can be changed into a prime (722180047) 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, 53117 + ... + 65312.

Almost surely, 2^722180042 is an apocalyptic number.

722180042 is a deficient number, since it is larger than the sum of its proper divisors (361454458).

722180042 is a wasteful number, since it uses less digits than its factorization.

722180042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121480.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 722180042 is about 26873.4077109696. The cubic root of 722180042 is about 897.1846351280.

The spelling of 722180042 in words is "seven hundred twenty-two million, one hundred eighty thousand, forty-two".