142089136 has 40 divisors (see below), whose sum is σ = 316924160. Its totient is φ = 60450624.

The previous prime is 142089127. The next prime is 142089173. The reversal of 142089136 is 631980241.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11005 + ... + 20131.

It is an arithmetic number, because the mean of its divisors is an integer number (7923104).

Almost surely, 2^142089136 is an apocalyptic number.

142089136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142089136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158462080).

142089136 is an abundant number, since it is smaller than the sum of its proper divisors (174835024).

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

142089136 is a wasteful number, since it uses less digits than its factorization.

142089136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9281 (or 9275 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 142089136 is about 11920.1147645482. The cubic root of 142089136 is about 521.8194841731.

The spelling of 142089136 in words is "one hundred forty-two million, eighty-nine thousand, one hundred thirty-six".