242670979 has 2 divisors, whose sum is σ = 242670980. Its totient is φ = 242670978.

The previous prime is 242670959. The next prime is 242670997. The reversal of 242670979 is 979076242.

It is a happy number.

Together with next prime (242670997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242670979 is a prime.

It is not a weakly prime, because it can be changed into another prime (242670919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121335489 + 121335490.

It is an arithmetic number, because the mean of its divisors is an integer number (121335490).

Almost surely, 2^242670979 is an apocalyptic number.

242670979 is a deficient number, since it is larger than the sum of its proper divisors (1).

242670979 is an equidigital number, since it uses as much as digits as its factorization.

242670979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 242670979 is about 15577.9003399046. The cubic root of 242670979 is about 623.7433772120.

The spelling of 242670979 in words is "two hundred forty-two million, six hundred seventy thousand, nine hundred seventy-nine".