242541731 has 4 divisors (see below), whose sum is σ = 244688232. Its totient is φ = 240395232.

The previous prime is 242541709. The next prime is 242541769. The reversal of 242541731 is 137145242.

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 242541731 - 2²² = 238347427 is a prime.

It is a super-2 number, since 2×242541731² = 117652982552952722, 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 = 242541694 and 242541703.

It is not an unprimeable number, because it can be changed into a prime (242541701) 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, 1073081 + ... + 1073306.

It is an arithmetic number, because the mean of its divisors is an integer number (61172058).

Almost surely, 2^242541731 is an apocalyptic number.

242541731 is a deficient number, since it is larger than the sum of its proper divisors (2146501).

242541731 is a wasteful number, since it uses less digits than its factorization.

242541731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146500.

The product of its digits is 6720, while the sum is 29.

The square root of 242541731 is about 15573.7513464162. The cubic root of 242541731 is about 623.6326210748.

Adding to 242541731 its reverse (137145242), we get a palindrome (379686973).

The spelling of 242541731 in words is "two hundred forty-two million, five hundred forty-one thousand, seven hundred thirty-one".