242691023 has 2 divisors, whose sum is σ = 242691024. Its totient is φ = 242691022.

The previous prime is 242691019. The next prime is 242691061. The reversal of 242691023 is 320196242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242691023 - 2² = 242691019 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242691523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121345511 + 121345512.

It is an arithmetic number, because the mean of its divisors is an integer number (121345512).

Almost surely, 2^242691023 is an apocalyptic number.

242691023 is a deficient number, since it is larger than the sum of its proper divisors (1).

242691023 is an equidigital number, since it uses as much as digits as its factorization.

242691023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 242691023 is about 15578.5436739125. The cubic root of 242691023 is about 623.7605499398.

The spelling of 242691023 in words is "two hundred forty-two million, six hundred ninety-one thousand, twenty-three".