242090971 has 2 divisors, whose sum is σ = 242090972. Its totient is φ = 242090970.

The previous prime is 242090941. The next prime is 242090977. The reversal of 242090971 is 179090242.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242090971 - 2¹¹ = 242088923 is a prime.

It is not a weakly prime, because it can be changed into another prime (242090977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121045485 + 121045486.

It is an arithmetic number, because the mean of its divisors is an integer number (121045486).

Almost surely, 2^242090971 is an apocalyptic number.

242090971 is a deficient number, since it is larger than the sum of its proper divisors (1).

242090971 is an equidigital number, since it uses as much as digits as its factorization.

242090971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 242090971 is about 15559.2728300522. The cubic root of 242090971 is about 623.2460443477.

The spelling of 242090971 in words is "two hundred forty-two million, ninety thousand, nine hundred seventy-one".