421167023 has 4 divisors (see below), whose sum is σ = 434753088. Its totient is φ = 407580960.

The previous prime is 421167001. The next prime is 421167031. The reversal of 421167023 is 320761124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421167023 - 2²⁸ = 152731567 is a prime.

It is a super-2 number, since 2×421167023² = 354763322525365058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421166983 and 421167001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421167073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6792986 + ... + 6793047.

It is an arithmetic number, because the mean of its divisors is an integer number (108688272).

Almost surely, 2^421167023 is an apocalyptic number.

421167023 is a deficient number, since it is larger than the sum of its proper divisors (13586065).

421167023 is a wasteful number, since it uses less digits than its factorization.

421167023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13586064.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 421167023 is about 20522.3542265501. The cubic root of 421167023 is about 749.5802231678.

The spelling of 421167023 in words is "four hundred twenty-one million, one hundred sixty-seven thousand, twenty-three".