421287423 has 8 divisors (see below), whose sum is σ = 575417136. Its totient is φ = 274008000.

The previous prime is 421287403. The next prime is 421287431. The reversal of 421287423 is 324782124.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 421287423 - 2⁶ = 421287359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421287403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1712428 + ... + 1712673.

It is an arithmetic number, because the mean of its divisors is an integer number (71927142).

Almost surely, 2^421287423 is an apocalyptic number.

421287423 is a deficient number, since it is larger than the sum of its proper divisors (154129713).

421287423 is a wasteful number, since it uses less digits than its factorization.

421287423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425145.

The product of its digits is 21504, while the sum is 33.

The square root of 421287423 is about 20525.2874035907. The cubic root of 421287423 is about 749.6516444451.

The spelling of 421287423 in words is "four hundred twenty-one million, two hundred eighty-seven thousand, four hundred twenty-three".