72123562 has 16 divisors (see below), whose sum is σ = 125335872. Its totient is φ = 30486240.

The previous prime is 72123539. The next prime is 72123589. The reversal of 72123562 is 26532127.

It is a self number, because there is not a number n which added to its sum of digits gives 72123562.

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, 34264 + ... + 36307.

It is an arithmetic number, because the mean of its divisors is an integer number (7833492).

Almost surely, 2^72123562 is an apocalyptic number.

72123562 is a deficient number, since it is larger than the sum of its proper divisors (53212310).

72123562 is a wasteful number, since it uses less digits than its factorization.

72123562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70653.

The product of its digits is 5040, while the sum is 28.

The square root of 72123562 is about 8492.5592138059. The cubic root of 72123562 is about 416.2546094534.

Adding to 72123562 its reverse (26532127), we get a palindrome (98655689).

The spelling of 72123562 in words is "seventy-two million, one hundred twenty-three thousand, five hundred sixty-two".