722916842 has 8 divisors (see below), whose sum is σ = 1088595396. Its totient is φ = 360051712.

The previous prime is 722916833. The next prime is 722916851. The reversal of 722916842 is 248619227.

It is an interprime number because it is at equal distance from previous prime (722916833) and next prime (722916851).

It can be written as a sum of positive squares in 2 ways, for example, as 487570561 + 235346281 = 22081^2 + 15341^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 722916842.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 702713 + ... + 703740.

Almost surely, 2^722916842 is an apocalyptic number.

722916842 is a deficient number, since it is larger than the sum of its proper divisors (365678554).

722916842 is a wasteful number, since it uses less digits than its factorization.

722916842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406712.

The product of its digits is 96768, while the sum is 41.

The square root of 722916842 is about 26887.1129353823. The cubic root of 722916842 is about 897.4896472297.

The spelling of 722916842 in words is "seven hundred twenty-two million, nine hundred sixteen thousand, eight hundred forty-two".