42185912321 has 8 divisors (see below), whose sum is σ = 48231615744. Its totient is φ = 36144995040.

The previous prime is 42185912303. The next prime is 42185912333. The reversal of 42185912321 is 12321958124.

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

It is not a de Polignac number, because 42185912321 - 2¹⁰ = 42185911297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42185912381) 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, 1177625 + ... + 1212918.

It is an arithmetic number, because the mean of its divisors is an integer number (6028951968).

Almost surely, 2^42185912321 is an apocalyptic number.

It is an amenable number.

42185912321 is a deficient number, since it is larger than the sum of its proper divisors (6045703423).

42185912321 is a wasteful number, since it uses less digits than its factorization.

42185912321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2393071.

The product of its digits is 34560, while the sum is 38.

The spelling of 42185912321 in words is "forty-two billion, one hundred eighty-five million, nine hundred twelve thousand, three hundred twenty-one".