423173772642 has 8 divisors (see below), whose sum is σ = 846347545296. Its totient is φ = 141057924212.

The previous prime is 423173772611. The next prime is 423173772737. The reversal of 423173772642 is 246277371324.

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

423173772642 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 423173772591 and 423173772600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35264481048 + ... + 35264481059.

It is an arithmetic number, because the mean of its divisors is an integer number (105793443162).

Almost surely, 2^423173772642 is an apocalyptic number.

423173772642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423173772642 is a wasteful number, since it uses less digits than its factorization.

423173772642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70528962112.

The product of its digits is 2370816, while the sum is 48.

The spelling of 423173772642 in words is "four hundred twenty-three billion, one hundred seventy-three million, seven hundred seventy-two thousand, six hundred forty-two".