420793 has 4 divisors (see below), whose sum is σ = 442960. Its totient is φ = 398628.

The previous prime is 420781. The next prime is 420799. The reversal of 420793 is 397024.

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 420793 - 2¹⁷ = 289721 is a prime.

It is a Duffinian number.

420793 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (420799) 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, 11055 + ... + 11092.

It is an arithmetic number, because the mean of its divisors is an integer number (110740).

2⁴²⁰⁷⁹³ is an apocalyptic number.

It is an amenable number.

420793 is a deficient number, since it is larger than the sum of its proper divisors (22167).

420793 is a wasteful number, since it uses less digits than its factorization.

420793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22166.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 420793 is about 648.6855941055. The cubic root of 420793 is about 74.9358265875.

The spelling of 420793 in words is "four hundred twenty thousand, seven hundred ninety-three".