42077 has 4 divisors (see below), whose sum is σ = 48096. Its totient is φ = 36060.

The previous prime is 42073. The next prime is 42083. The reversal of 42077 is 77024.

42077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 42077 - 2² = 42073 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42071) 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, 2999 + ... + 3012.

It is an arithmetic number, because the mean of its divisors is an integer number (12024).

2⁴²⁰⁷⁷ is an apocalyptic number.

It is an amenable number.

42077 is a deficient number, since it is larger than the sum of its proper divisors (6019).

42077 is an equidigital number, since it uses as much as digits as its factorization.

42077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6018.

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 42077 is about 205.1267900592. The cubic root of 42077 is about 34.7814958657.

The spelling of 42077 in words is "forty-two thousand, seventy-seven", and thus it is an iban number.