242493511 has 4 divisors (see below), whose sum is σ = 261146872. Its totient is φ = 223840152.

The previous prime is 242493487. The next prime is 242493521. The reversal of 242493511 is 115394242.

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 242493511 - 2⁵ = 242493479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242493521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9326661 + ... + 9326686.

It is an arithmetic number, because the mean of its divisors is an integer number (65286718).

Almost surely, 2^242493511 is an apocalyptic number.

242493511 is a deficient number, since it is larger than the sum of its proper divisors (18653361).

242493511 is a wasteful number, since it uses less digits than its factorization.

242493511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18653360.

The product of its digits is 8640, while the sum is 31.

The square root of 242493511 is about 15572.2031517701. The cubic root of 242493511 is about 623.5912899632.

The spelling of 242493511 in words is "two hundred forty-two million, four hundred ninety-three thousand, five hundred eleven".