421410023 has 4 divisors (see below), whose sum is σ = 425276280. Its totient is φ = 417543768.

The previous prime is 421409999. The next prime is 421410029. The reversal of 421410023 is 320014124.

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 421410023 - 2⁶ = 421409959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421409983 and 421410010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421410029) 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, 1932965 + ... + 1933182.

It is an arithmetic number, because the mean of its divisors is an integer number (106319070).

Almost surely, 2^421410023 is an apocalyptic number.

421410023 is a deficient number, since it is larger than the sum of its proper divisors (3866257).

421410023 is a wasteful number, since it uses less digits than its factorization.

421410023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3866256.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 421410023 is about 20528.2737462262. The cubic root of 421410023 is about 749.7243567809.

Adding to 421410023 its reverse (320014124), we get a palindrome (741424147).

The spelling of 421410023 in words is "four hundred twenty-one million, four hundred ten thousand, twenty-three".