420547572423 has 12 divisors (see below), whose sum is σ = 662681023368. Its totient is φ = 254877316560.

The previous prime is 420547572407. The next prime is 420547572433. The reversal of 420547572423 is 324275745024.

420547572423 is a `hidden beast` number, since 4 + 2 + 0 + 54 + 7 + 572 + 4 + 23 = 666.

It is not a de Polignac number, because 420547572423 - 2⁴ = 420547572407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420547572433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2123977540 + ... + 2123977737.

It is an arithmetic number, because the mean of its divisors is an integer number (55223418614).

Almost surely, 2^420547572423 is an apocalyptic number.

420547572423 is a deficient number, since it is larger than the sum of its proper divisors (242133450945).

420547572423 is a wasteful number, since it uses less digits than its factorization.

420547572423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4247955294 (or 4247955291 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 45.

The spelling of 420547572423 in words is "four hundred twenty billion, five hundred forty-seven million, five hundred seventy-two thousand, four hundred twenty-three".