242572859 has 2 divisors, whose sum is σ = 242572860. Its totient is φ = 242572858.

The previous prime is 242572819. The next prime is 242572871. The reversal of 242572859 is 958275242.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242572859 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (242572819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121286429 + 121286430.

It is an arithmetic number, because the mean of its divisors is an integer number (121286430).

Almost surely, 2^242572859 is an apocalyptic number.

242572859 is a deficient number, since it is larger than the sum of its proper divisors (1).

242572859 is an equidigital number, since it uses as much as digits as its factorization.

242572859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 44.

The square root of 242572859 is about 15574.7506882133. The cubic root of 242572859 is about 623.6592991035.

The spelling of 242572859 in words is "two hundred forty-two million, five hundred seventy-two thousand, eight hundred fifty-nine".