142868872 has 8 divisors (see below), whose sum is σ = 267879150. Its totient is φ = 71434432.

The previous prime is 142868849. The next prime is 142868879. The reversal of 142868872 is 278868241.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 100280196 + 42588676 = 10014^2 + 6526^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (142868879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8929297 + ... + 8929312.

Almost surely, 2^142868872 is an apocalyptic number.

It is an amenable number.

142868872 is a deficient number, since it is larger than the sum of its proper divisors (125010278).

142868872 is a wasteful number, since it uses less digits than its factorization.

142868872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17858615 (or 17858611 counting only the distinct ones).

The product of its digits is 344064, while the sum is 46.

The square root of 142868872 is about 11952.7767485217. The cubic root of 142868872 is about 522.7722650230.

The spelling of 142868872 in words is "one hundred forty-two million, eight hundred sixty-eight thousand, eight hundred seventy-two".