142999884 has 48 divisors (see below), whose sum is σ = 371935200. Its totient is φ = 47513088.

The previous prime is 142999867. The next prime is 142999889. The reversal of 142999884 is 488999241.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 142999884.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142999889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34432 + ... + 38360.

It is an arithmetic number, because the mean of its divisors is an integer number (7748650).

Almost surely, 2^142999884 is an apocalyptic number.

It is an amenable number.

142999884 is an abundant number, since it is smaller than the sum of its proper divisors (228935316).

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

142999884 is a wasteful number, since it uses less digits than its factorization.

142999884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4279 (or 4271 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The square root of 142999884 is about 11958.2558928968. The cubic root of 142999884 is about 522.9320117767.

The spelling of 142999884 in words is "one hundred forty-two million, nine hundred ninety-nine thousand, eight hundred eighty-four".