722890942 has 4 divisors (see below), whose sum is σ = 1084336416. Its totient is φ = 361445470.

The previous prime is 722890919. The next prime is 722890991. The reversal of 722890942 is 249098227.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180722734 + ... + 180722737.

It is an arithmetic number, because the mean of its divisors is an integer number (271084104).

Almost surely, 2^722890942 is an apocalyptic number.

722890942 is a deficient number, since it is larger than the sum of its proper divisors (361445474).

722890942 is a wasteful number, since it uses less digits than its factorization.

722890942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361445473.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 722890942 is about 26886.6312876865. The cubic root of 722890942 is about 897.4789289570.

The spelling of 722890942 in words is "seven hundred twenty-two million, eight hundred ninety thousand, nine hundred forty-two".