142522728 has 32 divisors (see below), whose sum is σ = 356801760. Its totient is φ = 47441600.

The previous prime is 142522727. The next prime is 142522729. The reversal of 142522728 is 827225241.

142522728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (142522727) and next prime (142522729).

It is not an unprimeable number, because it can be changed into a prime (142522727) 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, 15403 + ... + 22853.

It is an arithmetic number, because the mean of its divisors is an integer number (11150055).

Almost surely, 2^142522728 is an apocalyptic number.

It is an amenable number.

142522728 is an abundant number, since it is smaller than the sum of its proper divisors (214279032).

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

142522728 is a wasteful number, since it uses less digits than its factorization.

142522728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8257 (or 8253 counting only the distinct ones).

The product of its digits is 17920, while the sum is 33.

The square root of 142522728 is about 11938.2883195205. The cubic root of 142522728 is about 522.3497311363.

Adding to 142522728 its reverse (827225241), we get a palindrome (969747969).

The spelling of 142522728 in words is "one hundred forty-two million, five hundred twenty-two thousand, seven hundred twenty-eight".