423456143 has 4 divisors (see below), whose sum is σ = 461952168. Its totient is φ = 384960120.

The previous prime is 423456139. The next prime is 423456181. The reversal of 423456143 is 341654324.

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 423456143 - 2² = 423456139 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 (423456113) 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, 19247996 + ... + 19248017.

It is an arithmetic number, because the mean of its divisors is an integer number (115488042).

Almost surely, 2^423456143 is an apocalyptic number.

423456143 is a deficient number, since it is larger than the sum of its proper divisors (38496025).

423456143 is a wasteful number, since it uses less digits than its factorization.

423456143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38496024.

The product of its digits is 34560, while the sum is 32.

The square root of 423456143 is about 20578.0500290965. The cubic root of 423456143 is about 750.9358055014.

The spelling of 423456143 in words is "four hundred twenty-three million, four hundred fifty-six thousand, one hundred forty-three".