72255742 has 16 divisors (see below), whose sum is σ = 121796640. Its totient is φ = 31898592.

The previous prime is 72255739. The next prime is 72255749. The reversal of 72255742 is 24755227.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 72255698 and 72255707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72255749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59817 + ... + 61012.

It is an arithmetic number, because the mean of its divisors is an integer number (7612290).

Almost surely, 2^72255742 is an apocalyptic number.

72255742 is a deficient number, since it is larger than the sum of its proper divisors (49540898).

72255742 is a wasteful number, since it uses less digits than its factorization.

72255742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120867.

The product of its digits is 39200, while the sum is 34.

The square root of 72255742 is about 8500.3377579953. The cubic root of 72255742 is about 416.5087425693.

The spelling of 72255742 in words is "seventy-two million, two hundred fifty-five thousand, seven hundred forty-two".