142139998 has 32 divisors (see below), whose sum is σ = 286272000. Its totient is φ = 51118560.

The previous prime is 142139981. The next prime is 142140029. The reversal of 142139998 is 899931241.

It is a happy number.

142139998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×142139998³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33498 + ... + 37501.

It is an arithmetic number, because the mean of its divisors is an integer number (8946000).

Almost surely, 2^142139998 is an apocalyptic number.

142139998 is an abundant number, since it is smaller than the sum of its proper divisors (144132002).

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

142139998 is a wasteful number, since it uses less digits than its factorization.

142139998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71032.

The product of its digits is 139968, while the sum is 46.

The square root of 142139998 is about 11922.2480262742. The cubic root of 142139998 is about 521.8817399682.

The spelling of 142139998 in words is "one hundred forty-two million, one hundred thirty-nine thousand, nine hundred ninety-eight".