142175993 has 8 divisors (see below), whose sum is σ = 149778720. Its totient is φ = 134585280.

The previous prime is 142175989. The next prime is 142176019. The reversal of 142175993 is 399571241.

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

It is a cyclic number.

It is not a de Polignac number, because 142175993 - 2² = 142175989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 142175993.

It is not an unprimeable number, because it can be changed into a prime (142175923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31658 + ... + 35868.

It is an arithmetic number, because the mean of its divisors is an integer number (18722340).

Almost surely, 2^142175993 is an apocalyptic number.

It is an amenable number.

142175993 is a deficient number, since it is larger than the sum of its proper divisors (7602727).

142175993 is a wasteful number, since it uses less digits than its factorization.

142175993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6007.

The product of its digits is 68040, while the sum is 41.

The square root of 142175993 is about 11923.7575034047. The cubic root of 142175993 is about 521.9257893749.

The spelling of 142175993 in words is "one hundred forty-two million, one hundred seventy-five thousand, nine hundred ninety-three".