420983 has 4 divisors (see below), whose sum is σ = 443160. Its totient is φ = 398808.

The previous prime is 420977. The next prime is 420997. The reversal of 420983 is 389024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420983 - 2⁴ = 420967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420383) 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, 11060 + ... + 11097.

It is an arithmetic number, because the mean of its divisors is an integer number (110790).

2⁴²⁰⁹⁸³ is an apocalyptic number.

420983 is a deficient number, since it is larger than the sum of its proper divisors (22177).

420983 is a wasteful number, since it uses less digits than its factorization.

420983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22176.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 420983 is about 648.8320275695. The cubic root of 420983 is about 74.9471034422.

The spelling of 420983 in words is "four hundred twenty thousand, nine hundred eighty-three".