142728530 has 16 divisors (see below), whose sum is σ = 293613120. Its totient is φ = 48935472.

The previous prime is 142728527. The next prime is 142728533. The reversal of 142728530 is 35827241.

142728530 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 (142728527) and next prime (142728533).

It is not an unprimeable number, because it can be changed into a prime (142728533) 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, 1019420 + ... + 1019559.

It is an arithmetic number, because the mean of its divisors is an integer number (18350820).

Almost surely, 2^142728530 is an apocalyptic number.

142728530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142728530 is an abundant number, since it is smaller than the sum of its proper divisors (150884590).

142728530 is a wasteful number, since it uses less digits than its factorization.

142728530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038993.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 142728530 is about 11946.9046200261. The cubic root of 142728530 is about 522.6010335518.

The spelling of 142728530 in words is "one hundred forty-two million, seven hundred twenty-eight thousand, five hundred thirty".