242927491 has 2 divisors, whose sum is σ = 242927492. Its totient is φ = 242927490.

The previous prime is 242927453. The next prime is 242927507. The reversal of 242927491 is 194729242.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242927491 is a prime.

It is not a weakly prime, because it can be changed into another prime (242927891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121463745 + 121463746.

It is an arithmetic number, because the mean of its divisors is an integer number (121463746).

Almost surely, 2^242927491 is an apocalyptic number.

242927491 is a deficient number, since it is larger than the sum of its proper divisors (1).

242927491 is an equidigital number, since it uses as much as digits as its factorization.

242927491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 242927491 is about 15586.1313673406. The cubic root of 242927491 is about 623.9630729230.

The spelling of 242927491 in words is "two hundred forty-two million, nine hundred twenty-seven thousand, four hundred ninety-one".