242777 has 4 divisors (see below), whose sum is σ = 257076. Its totient is φ = 228480.

The previous prime is 242773. The next prime is 242779. The reversal of 242777 is 777242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 777242 = 2 ⋅388621.

It can be written as a sum of positive squares in 2 ways, for example, as 65536 + 177241 = 256^2 + 421^2 .

It is not a de Polignac number, because 242777 - 2² = 242773 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 242777.

It is not an unprimeable number, because it can be changed into a prime (242773) 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, 7124 + ... + 7157.

It is an arithmetic number, because the mean of its divisors is an integer number (64269).

2²⁴²⁷⁷⁷ is an apocalyptic number.

It is an amenable number.

242777 is a deficient number, since it is larger than the sum of its proper divisors (14299).

242777 is a wasteful number, since it uses less digits than its factorization.

242777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14298.

The product of its digits is 5488, while the sum is 29.

The square root of 242777 is about 492.7240607074. The cubic root of 242777 is about 62.3834200142.

The spelling of 242777 in words is "two hundred forty-two thousand, seven hundred seventy-seven", and thus it is an iban number.