242993787136 has 27 divisors (see below), whose sum is σ = 485054123701. Its totient is φ = 121492950016.

The previous prime is 242993787097. The next prime is 242993787139. The reversal of 242993787136 is 631787399242.

The square root of 242993787136 is 492944.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 205883617536 + 37110169600 = 453744^2 + 192640^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242993787139) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7871700 + ... + 7902508.

Almost surely, 2^242993787136 is an apocalyptic number.

242993787136 is the 492944-th square number.

It is an amenable number.

242993787136 is a deficient number, since it is larger than the sum of its proper divisors (242060336565).

242993787136 is an frugal number, since it uses more digits than its factorization.

242993787136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61634 (or 30811 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 61.

The spelling of 242993787136 in words is "two hundred forty-two billion, nine hundred ninety-three million, seven hundred eighty-seven thousand, one hundred thirty-six".