142128324 has 96 divisors (see below), whose sum is σ = 399840000. Its totient is φ = 43658784.

The previous prime is 142128271. The next prime is 142128383. The reversal of 142128324 is 423821241.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236977 + ... + 237575.

It is an arithmetic number, because the mean of its divisors is an integer number (4165000).

Almost surely, 2^142128324 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 142128324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199920000).

142128324 is an abundant number, since it is smaller than the sum of its proper divisors (257711676).

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

142128324 is a wasteful number, since it uses less digits than its factorization.

142128324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 617 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 142128324 is about 11921.7584273462. The cubic root of 142128324 is about 521.8674521432.

Adding to 142128324 its reverse (423821241), we get a palindrome (565949565).

The spelling of 142128324 in words is "one hundred forty-two million, one hundred twenty-eight thousand, three hundred twenty-four".