242773778 has 16 divisors (see below), whose sum is σ = 398604696. Its totient is φ = 110211840.

The previous prime is 242773759. The next prime is 242773793. The reversal of 242773778 is 877377242.

It is a happy number.

242773778 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 59089969 + 183683809 = 7687^2 + 13553^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74951 + ... + 78122.

Almost surely, 2^242773778 is an apocalyptic number.

242773778 is a deficient number, since it is larger than the sum of its proper divisors (155830918).

242773778 is a wasteful number, since it uses less digits than its factorization.

242773778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153149.

The product of its digits is 921984, while the sum is 47.

The square root of 242773778 is about 15581.1995045311. The cubic root of 242773778 is about 623.8314404046.

The spelling of 242773778 in words is "two hundred forty-two million, seven hundred seventy-three thousand, seven hundred seventy-eight".