42172313866875 has 60 divisors (see below), whose sum is σ = 78073448280520. Its totient is φ = 22491450810000.

The previous prime is 42172313866831. The next prime is 42172313866897. The reversal of 42172313866875 is 57866831327124.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

42172313866875 is a `hidden beast` number, since 4 + 2 + 17 + 231 + 386 + 6 + 8 + 7 + 5 = 666.

It is not a de Polignac number, because 42172313866875 - 2⁹ = 42172313866363 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 843573130 + ... + 843623120.

Almost surely, 2^{42172313866875} is an apocalyptic number.

42172313866875 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42172313866875 is a deficient number, since it is larger than the sum of its proper divisors (35901134413645).

42172313866875 is an frugal number, since it uses more digits than its factorization.

42172313866875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100011 (or 49999 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 63.

The spelling of 42172313866875 in words is "forty-two trillion, one hundred seventy-two billion, three hundred thirteen million, eight hundred sixty-six thousand, eight hundred seventy-five".