420233423 has 4 divisors (see below), whose sum is σ = 420277320. Its totient is φ = 420189528.

The previous prime is 420233417. The next prime is 420233497. The reversal of 420233423 is 324332024.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 420233423 - 2¹⁰ = 420232399 is a prime.

It is a super-2 number, since 2×420233423² = 353192259612593858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420233413) 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, 788 + ... + 29001.

It is an arithmetic number, because the mean of its divisors is an integer number (105069330).

Almost surely, 2^420233423 is an apocalyptic number.

420233423 is a deficient number, since it is larger than the sum of its proper divisors (43897).

420233423 is a wasteful number, since it uses less digits than its factorization.

420233423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43896.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 420233423 is about 20499.5956789396. The cubic root of 420233423 is about 749.0259491438.

Adding to 420233423 its reverse (324332024), we get a palindrome (744565447).

The spelling of 420233423 in words is "four hundred twenty million, two hundred thirty-three thousand, four hundred twenty-three".