242254231 has 2 divisors, whose sum is σ = 242254232. Its totient is φ = 242254230.

The previous prime is 242254171. The next prime is 242254247. The reversal of 242254231 is 132452242.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242254231 is a prime.

It is a super-2 number, since 2×242254231² = 117374224874802722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242254196 and 242254205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242254261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121127115 + 121127116.

It is an arithmetic number, because the mean of its divisors is an integer number (121127116).

Almost surely, 2^242254231 is an apocalyptic number.

242254231 is a deficient number, since it is larger than the sum of its proper divisors (1).

242254231 is an equidigital number, since it uses as much as digits as its factorization.

242254231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 25.

The square root of 242254231 is about 15564.5183349823. The cubic root of 242254231 is about 623.3861132986.

The spelling of 242254231 in words is "two hundred forty-two million, two hundred fifty-four thousand, two hundred thirty-one".