242530979 has 4 divisors (see below), whose sum is σ = 242642400. Its totient is φ = 242419560.

The previous prime is 242530969. The next prime is 242530999. The reversal of 242530979 is 979035242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242530979 - 2⁸ = 242530723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242530969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52379 + ... + 56820.

It is an arithmetic number, because the mean of its divisors is an integer number (60660600).

Almost surely, 2^242530979 is an apocalyptic number.

242530979 is a deficient number, since it is larger than the sum of its proper divisors (111421).

242530979 is a wasteful number, since it uses less digits than its factorization.

242530979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111420.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 242530979 is about 15573.4061463766. The cubic root of 242530979 is about 623.6234056201.

The spelling of 242530979 in words is "two hundred forty-two million, five hundred thirty thousand, nine hundred seventy-nine".