42377 has 4 divisors (see below), whose sum is σ = 43776. Its totient is φ = 40980.

The previous prime is 42373. The next prime is 42379. The reversal of 42377 is 77324.

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 42377 - 2² = 42373 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42373) 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, 653 + ... + 714.

It is an arithmetic number, because the mean of its divisors is an integer number (10944).

2⁴²³⁷⁷ is an apocalyptic number.

It is an amenable number.

42377 is a deficient number, since it is larger than the sum of its proper divisors (1399).

42377 is a wasteful number, since it uses less digits than its factorization.

42377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398.

The product of its digits is 1176, while the sum is 23.

The square root of 42377 is about 205.8567463067. The cubic root of 42377 is about 34.8639617263.

The spelling of 42377 in words is "forty-two thousand, three hundred seventy-seven", and thus it is an iban number.