242749777 has 8 divisors (see below), whose sum is σ = 250552800. Its totient is φ = 235069824.

The previous prime is 242749769. The next prime is 242749799. The reversal of 242749777 is 777947242.

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

It is a cyclic number.

It is not a de Polignac number, because 242749777 - 2³ = 242749769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242749777.

It is not an unprimeable number, because it can be changed into a prime (242749277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26752 + ... + 34657.

It is an arithmetic number, because the mean of its divisors is an integer number (31319100).

Almost surely, 2^242749777 is an apocalyptic number.

It is an amenable number.

242749777 is a deficient number, since it is larger than the sum of its proper divisors (7803023).

242749777 is an equidigital number, since it uses as much as digits as its factorization.

242749777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61535.

The product of its digits is 1382976, while the sum is 49.

The square root of 242749777 is about 15580.4292944707. The cubic root of 242749777 is about 623.8108820725.

The spelling of 242749777 in words is "two hundred forty-two million, seven hundred forty-nine thousand, seven hundred seventy-seven".