242040131 has 4 divisors (see below), whose sum is σ = 246008064. Its totient is φ = 238072200.

The previous prime is 242040103. The next prime is 242040143. The reversal of 242040131 is 131040242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131040242 = 2 ⋅65520121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242040131 is a prime.

It is a super-2 number, since 2×242040131² = 117166850028994322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242040151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1983875 + ... + 1983996.

It is an arithmetic number, because the mean of its divisors is an integer number (61502016).

Almost surely, 2^242040131 is an apocalyptic number.

242040131 is a deficient number, since it is larger than the sum of its proper divisors (3967933).

242040131 is an equidigital number, since it uses as much as digits as its factorization.

242040131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967932.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 242040131 is about 15557.6389918265. The cubic root of 242040131 is about 623.2024133013.

Adding to 242040131 its reverse (131040242), we get a palindrome (373080373).

The spelling of 242040131 in words is "two hundred forty-two million, forty thousand, one hundred thirty-one".