342777 has 4 divisors (see below), whose sum is σ = 457040. Its totient is φ = 228516.

The previous prime is 342761. The next prime is 342791. The reversal of 342777 is 777243.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 342777 - 2⁴ = 342761 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (342757) 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, 57127 + ... + 57132.

It is an arithmetic number, because the mean of its divisors is an integer number (114260).

2³⁴²⁷⁷⁷ is an apocalyptic number.

It is an amenable number.

342777 is a deficient number, since it is larger than the sum of its proper divisors (114263).

342777 is a wasteful number, since it uses less digits than its factorization.

342777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114262.

The product of its digits is 8232, while the sum is 30.

The square root of 342777 is about 585.4716047769. The cubic root of 342777 is about 69.9848266432.

The spelling of 342777 in words is "three hundred forty-two thousand, seven hundred seventy-seven", and thus it is an iban number.