142489930 has 64 divisors (see below), whose sum is σ = 298598400. Its totient is φ = 48409920.

The previous prime is 142489913. The next prime is 142489931. The reversal of 142489930 is 39984241.

142489930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (142489931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164679 + ... + 165541.

It is an arithmetic number, because the mean of its divisors is an integer number (4665600).

Almost surely, 2^142489930 is an apocalyptic number.

142489930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142489930 is an abundant number, since it is smaller than the sum of its proper divisors (156108470).

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

142489930 is a wasteful number, since it uses less digits than its factorization.

142489930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 142489930 is about 11936.9145929759. The cubic root of 142489930 is about 522.3096595373.

The spelling of 142489930 in words is "one hundred forty-two million, four hundred eighty-nine thousand, nine hundred thirty".