242346557 has 4 divisors (see below), whose sum is σ = 242379360. Its totient is φ = 242313756.

The previous prime is 242346553. The next prime is 242346589. The reversal of 242346557 is 755643242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 242346557 - 2² = 242346553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242346557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242346553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458 + ... + 22020.

It is an arithmetic number, because the mean of its divisors is an integer number (60594840).

Almost surely, 2^242346557 is an apocalyptic number.

It is an amenable number.

242346557 is a deficient number, since it is larger than the sum of its proper divisors (32803).

242346557 is a wasteful number, since it uses less digits than its factorization.

242346557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32802.

The product of its digits is 201600, while the sum is 38.

The square root of 242346557 is about 15567.4839649829. The cubic root of 242346557 is about 623.4652965544.

Adding to 242346557 its reverse (755643242), we get a palindrome (997989799).

The spelling of 242346557 in words is "two hundred forty-two million, three hundred forty-six thousand, five hundred fifty-seven".