142889375 has 30 divisors (see below), whose sum is σ = 184609656. Its totient is φ = 110556000.

The previous prime is 142889371. The next prime is 142889377. The reversal of 142889375 is 573988241.

It is a happy number.

It is not a de Polignac number, because 142889375 - 2² = 142889371 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142889371) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 855542 + ... + 855708.

Almost surely, 2^142889375 is an apocalyptic number.

142889375 is a deficient number, since it is larger than the sum of its proper divisors (41720281).

142889375 is an frugal number, since it uses more digits than its factorization.

142889375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 209 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 142889375 is about 11953.6343845711. The cubic root of 142889375 is about 522.7972713730.

The spelling of 142889375 in words is "one hundred forty-two million, eight hundred eighty-nine thousand, three hundred seventy-five".