242131 has 4 divisors (see below), whose sum is σ = 256392. Its totient is φ = 227872.

The previous prime is 242129. The next prime is 242147. The reversal of 242131 is 131242.

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 242131 - 2¹ = 242129 is a prime.

It is a super-2 number, since 2×242131² = 117254842322, which contains 22 as substring.

It is a Duffinian number.

242131 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (242101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7105 + ... + 7138.

It is an arithmetic number, because the mean of its divisors is an integer number (64098).

2²⁴²¹³¹ is an apocalyptic number.

242131 is a deficient number, since it is larger than the sum of its proper divisors (14261).

242131 is a wasteful number, since it uses less digits than its factorization.

242131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14260.

The product of its digits is 48, while the sum is 13.

The square root of 242131 is about 492.0680847200. The cubic root of 242131 is about 62.3280393062.

Adding to 242131 its reverse (131242), we get a palindrome (373373).

Subtracting from 242131 its reverse (131242), we obtain a square (110889 = 333²).

It can be divided in two parts, 242 and 131, that added together give a palindrome (373).

The spelling of 242131 in words is "two hundred forty-two thousand, one hundred thirty-one".