421353423 has 6 divisors (see below), whose sum is σ = 608621624. Its totient is φ = 280902276.

The previous prime is 421353421. The next prime is 421353479. The reversal of 421353423 is 324353124.

It is not a de Polignac number, because 421353423 - 2¹ = 421353421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421353421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23408515 + ... + 23408532.

Almost surely, 2^421353423 is an apocalyptic number.

421353423 is a deficient number, since it is larger than the sum of its proper divisors (187268201).

421353423 is a wasteful number, since it uses less digits than its factorization.

421353423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46817053 (or 46817050 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 421353423 is about 20526.8951134846. The cubic root of 421353423 is about 749.6907898696.

The spelling of 421353423 in words is "four hundred twenty-one million, three hundred fifty-three thousand, four hundred twenty-three".