242576778 has 8 divisors (see below), whose sum is σ = 485153568. Its totient is φ = 80858924.

The previous prime is 242576777. The next prime is 242576797. The reversal of 242576778 is 877675242.

It is a sphenic number, since it is the product of 3 distinct primes.

242576778 is an admirable number.

It is a super-2 number, since 2×242576778² = 117686986449722568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (242576771) 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, 20214726 + ... + 20214737.

It is an arithmetic number, because the mean of its divisors is an integer number (60644196).

Almost surely, 2^242576778 is an apocalyptic number.

242576778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242576778 is a wasteful number, since it uses less digits than its factorization.

242576778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40429468.

The product of its digits is 1317120, while the sum is 48.

The square root of 242576778 is about 15574.8765003129. The cubic root of 242576778 is about 623.6626576926.

The spelling of 242576778 in words is "two hundred forty-two million, five hundred seventy-six thousand, seven hundred seventy-eight".