722156742 has 16 divisors (see below), whose sum is σ = 1604792880. Its totient is φ = 240718896.

The previous prime is 722156723. The next prime is 722156759. The reversal of 722156742 is 247651227.

It is a happy number.

722156742 is a `hidden beast` number, since 72 + 21 + 567 + 4 + 2 = 666.

722156742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 722156697 and 722156706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6686583 + ... + 6686690.

It is an arithmetic number, because the mean of its divisors is an integer number (100299555).

Almost surely, 2^722156742 is an apocalyptic number.

722156742 is an abundant number, since it is smaller than the sum of its proper divisors (882636138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

722156742 is a wasteful number, since it uses less digits than its factorization.

722156742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13373284 (or 13373278 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 722156742 is about 26872.9741934160. The cubic root of 722156742 is about 897.1749862752.

It can be divided in two parts, 722 and 156742, that added together give a cube (157464 = 54³).

The spelling of 722156742 in words is "seven hundred twenty-two million, one hundred fifty-six thousand, seven hundred forty-two".