142885424 has 40 divisors (see below), whose sum is σ = 306981840. Its totient is φ = 63878400.

The previous prime is 142885397. The next prime is 142885429. The reversal of 142885424 is 424588241.

It is not an unprimeable number, because it can be changed into a prime (142885429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4082 + ... + 17390.

It is an arithmetic number, because the mean of its divisors is an integer number (7674546).

Almost surely, 2^142885424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142885424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153490920).

142885424 is an abundant number, since it is smaller than the sum of its proper divisors (164096416).

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

142885424 is a wasteful number, since it uses less digits than its factorization.

142885424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13389 (or 13383 counting only the distinct ones).

The product of its digits is 81920, while the sum is 38.

The square root of 142885424 is about 11953.4691198831. The cubic root of 142885424 is about 522.7924527477.

The spelling of 142885424 in words is "one hundred forty-two million, eight hundred eighty-five thousand, four hundred twenty-four".