142578125 has 20 divisors (see below), whose sum is σ = 180664044. Its totient is φ = 112500000.

The previous prime is 142578103. The next prime is 142578157. The reversal of 142578125 is 521875241.

It can be written as a sum of positive squares in 10 ways, for example, as 4609609 + 137968516 = 2147^2 + 11746^2 .

It is not a de Polignac number, because 142578125 - 2¹⁰ = 142577101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1953089 + ... + 1953161.

Almost surely, 2^142578125 is an apocalyptic number.

It is an amenable number.

142578125 is a deficient number, since it is larger than the sum of its proper divisors (38085919).

142578125 is an frugal number, since it uses more digits than its factorization.

142578125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 78 counting only the distinct ones).

The product of its digits is 22400, while the sum is 35.

The square root of 142578125 is about 11940.6082340893. The cubic root of 142578125 is about 522.4173995477.

The spelling of 142578125 in words is "one hundred forty-two million, five hundred seventy-eight thousand, one hundred twenty-five".