242514778 has 16 divisors (see below), whose sum is σ = 397742400. Its totient is φ = 109984000.

The previous prime is 242514757. The next prime is 242514781. The reversal of 242514778 is 877415242.

It is a self number, because there is not a number n which added to its sum of digits gives 242514778.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2398 + ... + 22153.

It is an arithmetic number, because the mean of its divisors is an integer number (24858900).

Almost surely, 2^242514778 is an apocalyptic number.

242514778 is a deficient number, since it is larger than the sum of its proper divisors (155227622).

242514778 is a wasteful number, since it uses less digits than its factorization.

242514778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25013.

The product of its digits is 125440, while the sum is 40.

The square root of 242514778 is about 15572.8859881526. The cubic root of 242514778 is about 623.6095193558.

The spelling of 242514778 in words is "two hundred forty-two million, five hundred fourteen thousand, seven hundred seventy-eight".