142971928 has 16 divisors (see below), whose sum is σ = 292442760. Its totient is φ = 64987200.

The previous prime is 142971923. The next prime is 142971937. The reversal of 142971928 is 829179241.

It is a happy number.

142971928 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142971923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 812253 + ... + 812428.

Almost surely, 2^142971928 is an apocalyptic number.

It is an amenable number.

142971928 is an abundant number, since it is smaller than the sum of its proper divisors (149470832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142971928 is a wasteful number, since it uses less digits than its factorization.

142971928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624698 (or 1624694 counting only the distinct ones).

The product of its digits is 72576, while the sum is 43.

The square root of 142971928 is about 11957.0869362065. The cubic root of 142971928 is about 522.8979324015.

The spelling of 142971928 in words is "one hundred forty-two million, nine hundred seventy-one thousand, nine hundred twenty-eight".