420973 has 4 divisors (see below), whose sum is σ = 481120. Its totient is φ = 360828.

The previous prime is 420967. The next prime is 420977. The reversal of 420973 is 379024.

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 420973 - 2⁵ = 420941 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 (420977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30063 + ... + 30076.

It is an arithmetic number, because the mean of its divisors is an integer number (120280).

2⁴²⁰⁹⁷³ is an apocalyptic number.

It is an amenable number.

420973 is a deficient number, since it is larger than the sum of its proper divisors (60147).

420973 is an equidigital number, since it uses as much as digits as its factorization.

420973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60146.

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

The square root of 420973 is about 648.8243213690. The cubic root of 420973 is about 74.9465100082.

Adding to 420973 its reverse (379024), we get a palindrome (799997).

The spelling of 420973 in words is "four hundred twenty thousand, nine hundred seventy-three".