423455421 has 8 divisors (see below), whose sum is σ = 578378304. Its totient is φ = 275418080.

The previous prime is 423455411. The next prime is 423455429. The reversal of 423455421 is 124554324.

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

It is a cyclic number.

It is not a de Polignac number, because 423455421 - 2²⁷ = 289237693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423455429) 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, 1721241 + ... + 1721486.

It is an arithmetic number, because the mean of its divisors is an integer number (72297288).

Almost surely, 2^423455421 is an apocalyptic number.

423455421 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

423455421 is a deficient number, since it is larger than the sum of its proper divisors (154922883).

423455421 is a wasteful number, since it uses less digits than its factorization.

423455421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3442771.

The product of its digits is 19200, while the sum is 30.

The square root of 423455421 is about 20578.0324861246. The cubic root of 423455421 is about 750.9353787150.

The spelling of 423455421 in words is "four hundred twenty-three million, four hundred fifty-five thousand, four hundred twenty-one".