142805975 has 24 divisors (see below), whose sum is σ = 194779200. Its totient is φ = 103201920.

The previous prime is 142805963. The next prime is 142805981. The reversal of 142805975 is 579508241.

It is not a de Polignac number, because 142805975 - 2²⁴ = 126028759 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10601 + ... + 19949.

It is an arithmetic number, because the mean of its divisors is an integer number (8115800).

Almost surely, 2^142805975 is an apocalyptic number.

142805975 is a deficient number, since it is larger than the sum of its proper divisors (51973225).

142805975 is a wasteful number, since it uses less digits than its factorization.

142805975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9419 (or 9414 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 142805975 is about 11950.1453966050. The cubic root of 142805975 is about 522.6955381777.

The spelling of 142805975 in words is "one hundred forty-two million, eight hundred five thousand, nine hundred seventy-five".