42481 has 4 divisors (see below), whose sum is σ = 44352. Its totient is φ = 40612.

The previous prime is 42473. The next prime is 42487. The reversal of 42481 is 18424.

42481 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.

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 42481 - 2³ = 42473 is a prime.

It is a super-2 number, since 2×42481² = 3609270722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42487) 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, 901 + ... + 946.

It is an arithmetic number, because the mean of its divisors is an integer number (11088).

2⁴²⁴⁸¹ is an apocalyptic number.

It is an amenable number.

42481 is a deficient number, since it is larger than the sum of its proper divisors (1871).

42481 is a wasteful number, since it uses less digits than its factorization.

42481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870.

The product of its digits is 256, while the sum is 19.

The square root of 42481 is about 206.1091943607. The cubic root of 42481 is about 34.8924590237.

It can be divided in two parts, 424 and 81, that added together give a palindrome (505).

The spelling of 42481 in words is "forty-two thousand, four hundred eighty-one".