420332023 has 2 divisors, whose sum is σ = 420332024. Its totient is φ = 420332022.

The previous prime is 420331991. The next prime is 420332053. The reversal of 420332023 is 320233024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420332023 - 2⁵ = 420331991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420332053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210166011 + 210166012.

It is an arithmetic number, because the mean of its divisors is an integer number (210166012).

Almost surely, 2^420332023 is an apocalyptic number.

420332023 is a deficient number, since it is larger than the sum of its proper divisors (1).

420332023 is an equidigital number, since it uses as much as digits as its factorization.

420332023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 420332023 is about 20502.0004633694. Note that the first 3 decimals coincide. The cubic root of 420332023 is about 749.0845262577.

Subtracting from 420332023 its sum of digits (19), we obtain a square (420332004 = 20502²).

Adding to 420332023 its reverse (320233024), we get a palindrome (740565047).

The spelling of 420332023 in words is "four hundred twenty million, three hundred thirty-two thousand, twenty-three".