242402131 has 2 divisors, whose sum is σ = 242402132. Its totient is φ = 242402130.

The previous prime is 242402107. The next prime is 242402141. The reversal of 242402131 is 131204242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242402131 - 2¹¹ = 242400083 is a prime.

It is a super-2 number, since 2×242402131² = 117517586226682322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242402099 and 242402108.

It is not a weakly prime, because it can be changed into another prime (242402101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121201065 + 121201066.

It is an arithmetic number, because the mean of its divisors is an integer number (121201066).

Almost surely, 2^242402131 is an apocalyptic number.

242402131 is a deficient number, since it is larger than the sum of its proper divisors (1).

242402131 is an equidigital number, since it uses as much as digits as its factorization.

242402131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 242402131 is about 15569.2688010709. The cubic root of 242402131 is about 623.5129498169.

Adding to 242402131 its reverse (131204242), we get a palindrome (373606373).

The spelling of 242402131 in words is "two hundred forty-two million, four hundred two thousand, one hundred thirty-one".