242379947 has 2 divisors, whose sum is σ = 242379948. Its totient is φ = 242379946.

The previous prime is 242379923. The next prime is 242379953. The reversal of 242379947 is 749973242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242379947 - 2²⁴ = 225602731 is a prime.

It is a super-3 number, since 3×242379947³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (242379967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121189973 + 121189974.

It is an arithmetic number, because the mean of its divisors is an integer number (121189974).

Almost surely, 2^242379947 is an apocalyptic number.

242379947 is a deficient number, since it is larger than the sum of its proper divisors (1).

242379947 is an equidigital number, since it uses as much as digits as its factorization.

242379947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 47.

The square root of 242379947 is about 15568.5563556805. The cubic root of 242379947 is about 623.4939284862.

The spelling of 242379947 in words is "two hundred forty-two million, three hundred seventy-nine thousand, nine hundred forty-seven".