242204131 has 4 divisors (see below), whose sum is σ = 260835232. Its totient is φ = 223573032.

The previous prime is 242204111. The next prime is 242204141. The reversal of 242204131 is 131402242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242204131 - 2¹¹ = 242202083 is a prime.

It is a super-2 number, since 2×242204131² = 117325682146930322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242204099 and 242204108.

It is not an unprimeable number, because it can be changed into a prime (242204111) 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, 9315531 + ... + 9315556.

It is an arithmetic number, because the mean of its divisors is an integer number (65208808).

Almost surely, 2^242204131 is an apocalyptic number.

242204131 is a deficient number, since it is larger than the sum of its proper divisors (18631101).

242204131 is a wasteful number, since it uses less digits than its factorization.

242204131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18631100.

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

The square root of 242204131 is about 15562.9088219394. The cubic root of 242204131 is about 623.3431366877.

Adding to 242204131 its reverse (131402242), we get a palindrome (373606373).

The spelling of 242204131 in words is "two hundred forty-two million, two hundred four thousand, one hundred thirty-one".