424981 has 4 divisors (see below), whose sum is σ = 431392. Its totient is φ = 418572.

The previous prime is 424967. The next prime is 424997. The reversal of 424981 is 189424.

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 424981 - 2¹⁵ = 392213 is a prime.

It is a super-2 number, since 2×424981² = 361217700722, which contains 22 as substring.

It is a Duffinian number.

424981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424961) 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, 3105 + ... + 3238.

It is an arithmetic number, because the mean of its divisors is an integer number (107848).

2⁴²⁴⁹⁸¹ is an apocalyptic number.

It is an amenable number.

424981 is a deficient number, since it is larger than the sum of its proper divisors (6411).

424981 is an equidigital number, since it uses as much as digits as its factorization.

424981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6410.

The product of its digits is 2304, while the sum is 28.

The square root of 424981 is about 651.9056680226. The cubic root of 424981 is about 75.1836093937.

The spelling of 424981 in words is "four hundred twenty-four thousand, nine hundred eighty-one".