420423807 has 16 divisors (see below), whose sum is σ = 569812320. Its totient is φ = 275692032.

The previous prime is 420423797. The next prime is 420423833. The reversal of 420423807 is 708324024.

It is not a de Polignac number, because 420423807 - 2⁸ = 420423551 is a prime.

It is a super-3 number, since 3×420423807³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420423007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48603 + ... + 56595.

It is an arithmetic number, because the mean of its divisors is an integer number (35613270).

Almost surely, 2^420423807 is an apocalyptic number.

420423807 is a deficient number, since it is larger than the sum of its proper divisors (149388513).

420423807 is a wasteful number, since it uses less digits than its factorization.

420423807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8282.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 420423807 is about 20504.2387569010. The cubic root of 420423807 is about 749.1390458332.

The spelling of 420423807 in words is "four hundred twenty million, four hundred twenty-three thousand, eight hundred seven".