423171943 has 4 divisors (see below), whose sum is σ = 423218320. Its totient is φ = 423125568.

The previous prime is 423171941. The next prime is 423171977. The reversal of 423171943 is 349171324.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 423171943 - 2¹ = 423171941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423171899 and 423171908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423171941) 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, 4458 + ... + 29431.

It is an arithmetic number, because the mean of its divisors is an integer number (105804580).

Almost surely, 2^423171943 is an apocalyptic number.

423171943 is a deficient number, since it is larger than the sum of its proper divisors (46377).

423171943 is a wasteful number, since it uses less digits than its factorization.

423171943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46376.

The product of its digits is 18144, while the sum is 34.

The square root of 423171943 is about 20571.1434538773. The cubic root of 423171943 is about 750.7677725803.

The spelling of 423171943 in words is "four hundred twenty-three million, one hundred seventy-one thousand, nine hundred forty-three".