142489428 has 24 divisors (see below), whose sum is σ = 335096832. Its totient is φ = 47121984.

The previous prime is 142489421. The next prime is 142489429. The reversal of 142489428 is 824984241.

It is a self number, because there is not a number n which added to its sum of digits gives 142489428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142489421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45225 + ... + 48272.

It is an arithmetic number, because the mean of its divisors is an integer number (13962368).

Almost surely, 2^142489428 is an apocalyptic number.

It is an amenable number.

142489428 is an abundant number, since it is smaller than the sum of its proper divisors (192607404).

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

142489428 is a wasteful number, since it uses less digits than its factorization.

142489428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93631 (or 93629 counting only the distinct ones).

The product of its digits is 147456, while the sum is 42.

The square root of 142489428 is about 11936.8935657482. The cubic root of 142489428 is about 522.3090461612.

The spelling of 142489428 in words is "one hundred forty-two million, four hundred eighty-nine thousand, four hundred twenty-eight".