72299842 has 16 divisors (see below), whose sum is σ = 112404600. Its totient is φ = 34836480.

The previous prime is 72299789. The next prime is 72299849. The reversal of 72299842 is 24899227.

It can be written as a sum of positive squares in 4 ways, for example, as 66243321 + 6056521 = 8139^2 + 2461^2 .

It is not an unprimeable number, because it can be changed into a prime (72299849) 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, 43792 + ... + 45412.

Almost surely, 2^72299842 is an apocalyptic number.

72299842 is a deficient number, since it is larger than the sum of its proper divisors (40104758).

72299842 is a wasteful number, since it uses less digits than its factorization.

72299842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421.

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

The square root of 72299842 is about 8502.9313768841. The cubic root of 72299842 is about 416.5934615570.

It can be divided in two parts, 7229 and 9842, that added together give a palindrome (17071).

The spelling of 72299842 in words is "seventy-two million, two hundred ninety-nine thousand, eight hundred forty-two".