242137731 has 32 divisors (see below), whose sum is σ = 367762176. Its totient is φ = 140400000.

The previous prime is 242137699. The next prime is 242137741. The reversal of 242137731 is 137731242.

It is not a de Polignac number, because 242137731 - 2⁵ = 242137699 is a prime.

It is a super-2 number, since 2×242137731² = 117261361547656722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (242137741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72856 + ... + 76106.

It is an arithmetic number, because the mean of its divisors is an integer number (11492568).

Almost surely, 2^242137731 is an apocalyptic number.

242137731 is a deficient number, since it is larger than the sum of its proper divisors (125624445).

242137731 is a wasteful number, since it uses less digits than its factorization.

242137731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3363.

The product of its digits is 7056, while the sum is 30.

The square root of 242137731 is about 15560.7753984177. The cubic root of 242137731 is about 623.2861685330.

Adding to 242137731 its reverse (137731242), we get a palindrome (379868973).

The spelling of 242137731 in words is "two hundred forty-two million, one hundred thirty-seven thousand, seven hundred thirty-one".