242422531 has 16 divisors (see below), whose sum is σ = 264176640. Its totient is φ = 221132160.

The previous prime is 242422493. The next prime is 242422559. The reversal of 242422531 is 135224242.

It is a cyclic number.

It is not a de Polignac number, because 242422531 - 2¹⁷ = 242291459 is a prime.

It is a super-2 number, since 2×242422531² = 117537367072891922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242422496 and 242422505.

It is not an unprimeable number, because it can be changed into a prime (242422591) 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 in 15 ways as a sum of consecutive naturals, for example, 632766 + ... + 633148.

It is an arithmetic number, because the mean of its divisors is an integer number (16511040).

Almost surely, 2^242422531 is an apocalyptic number.

242422531 is a deficient number, since it is larger than the sum of its proper divisors (21754109).

242422531 is a wasteful number, since it uses less digits than its factorization.

242422531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846.

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

The square root of 242422531 is about 15569.9239240274. The cubic root of 242422531 is about 623.5304404598.

Adding to 242422531 its reverse (135224242), we get a palindrome (377646773).

The spelling of 242422531 in words is "two hundred forty-two million, four hundred twenty-two thousand, five hundred thirty-one".