242557053 has 4 divisors (see below), whose sum is σ = 323409408. Its totient is φ = 161704700.

The previous prime is 242557043. The next prime is 242557067. The reversal of 242557053 is 350755242.

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.

It is a cyclic number.

It is not a de Polignac number, because 242557053 - 2¹⁸ = 242294909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242557013) 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, 40426173 + ... + 40426178.

It is an arithmetic number, because the mean of its divisors is an integer number (80852352).

Almost surely, 2^242557053 is an apocalyptic number.

It is an amenable number.

242557053 is a deficient number, since it is larger than the sum of its proper divisors (80852355).

242557053 is an equidigital number, since it uses as much as digits as its factorization.

242557053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80852354.

The product of its (nonzero) digits is 42000, while the sum is 33.

The square root of 242557053 is about 15574.2432560943. The cubic root of 242557053 is about 623.6457529700.

The spelling of 242557053 in words is "two hundred forty-two million, five hundred fifty-seven thousand, fifty-three".