142393828 has 72 divisors (see below), whose sum is σ = 288590400. Its totient is φ = 61117056.

The previous prime is 142393813. The next prime is 142393829. The reversal of 142393828 is 828393241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142393829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2686650 + ... + 2686702.

It is an arithmetic number, because the mean of its divisors is an integer number (4008200).

Almost surely, 2^142393828 is an apocalyptic number.

It is an amenable number.

142393828 is an abundant number, since it is smaller than the sum of its proper divisors (146196572).

142393828 is a wasteful number, since it uses less digits than its factorization.

142393828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 126 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 142393828 is about 11932.8885019512. Note that the first 3 decimals coincide. The cubic root of 142393828 is about 522.1922096193.

The spelling of 142393828 in words is "one hundred forty-two million, three hundred ninety-three thousand, eight hundred twenty-eight".