42477 has 4 divisors (see below), whose sum is σ = 56640. Its totient is φ = 28316.

The previous prime is 42473. The next prime is 42487. The reversal of 42477 is 77424.

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 42477 - 2² = 42473 is a prime.

It is a D-number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 42477.

It is not an unprimeable number, because it can be changed into a prime (42473) 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, 7077 + ... + 7082.

It is an arithmetic number, because the mean of its divisors is an integer number (14160).

2⁴²⁴⁷⁷ is an apocalyptic number.

It is an amenable number.

42477 is a deficient number, since it is larger than the sum of its proper divisors (14163).

42477 is a wasteful number, since it uses less digits than its factorization.

42477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14162.

The product of its digits is 1568, while the sum is 24.

The square root of 42477 is about 206.0994905379. The cubic root of 42477 is about 34.8913638344.

The spelling of 42477 in words is "forty-two thousand, four hundred seventy-seven", and thus it is an iban number.