42277 has 4 divisors (see below), whose sum is σ = 42976. Its totient is φ = 41580.

The previous prime is 42257. The next prime is 42281. The reversal of 42277 is 77224.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42277 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8 and base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249 + ... + 382.

It is an arithmetic number, because the mean of its divisors is an integer number (10744).

2⁴²²⁷⁷ is an apocalyptic number.

It is an amenable number.

42277 is a deficient number, since it is larger than the sum of its proper divisors (699).

42277 is an equidigital number, since it uses as much as digits as its factorization.

42277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698.

The product of its digits is 784, while the sum is 22.

The square root of 42277 is about 205.6137154958. The cubic root of 42277 is about 34.8365164759.

The spelling of 42277 in words is "forty-two thousand, two hundred seventy-seven", and thus it is an iban number.