242335991 has 2 divisors, whose sum is σ = 242335992. Its totient is φ = 242335990.

The previous prime is 242335987. The next prime is 242336033. The reversal of 242335991 is 199533242.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242335991 - 2² = 242335987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242235991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121167995 + 121167996.

It is an arithmetic number, because the mean of its divisors is an integer number (121167996).

Almost surely, 2^242335991 is an apocalyptic number.

242335991 is a deficient number, since it is larger than the sum of its proper divisors (1).

242335991 is an equidigital number, since it uses as much as digits as its factorization.

242335991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 38.

The square root of 242335991 is about 15567.1446000864. The cubic root of 242335991 is about 623.4562356595.

The spelling of 242335991 in words is "two hundred forty-two million, three hundred thirty-five thousand, nine hundred ninety-one".