242390047 has 2 divisors, whose sum is σ = 242390048. Its totient is φ = 242390046.

The previous prime is 242390009. The next prime is 242390059. The reversal of 242390047 is 740093242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242390047 - 2¹⁹ = 241865759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (246390047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121195023 + 121195024.

It is an arithmetic number, because the mean of its divisors is an integer number (121195024).

Almost surely, 2^242390047 is an apocalyptic number.

242390047 is a deficient number, since it is larger than the sum of its proper divisors (1).

242390047 is an equidigital number, since it uses as much as digits as its factorization.

242390047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 242390047 is about 15568.8807240598. The cubic root of 242390047 is about 623.5025887202.

The spelling of 242390047 in words is "two hundred forty-two million, three hundred ninety thousand, forty-seven".