142521424 has 40 divisors (see below), whose sum is σ = 282839040. Its totient is φ = 69552000.

The previous prime is 142521419. The next prime is 142521433. The reversal of 142521424 is 424125241.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 123249 + ... + 124399.

It is an arithmetic number, because the mean of its divisors is an integer number (7070976).

Almost surely, 2^142521424 is an apocalyptic number.

It is an amenable number.

142521424 is a deficient number, since it is larger than the sum of its proper divisors (140317616).

142521424 is a wasteful number, since it uses less digits than its factorization.

142521424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339 (or 1333 counting only the distinct ones).

The product of its digits is 2560, while the sum is 25.

The square root of 142521424 is about 11938.2337052011. The cubic root of 142521424 is about 522.3481380661.

Adding to 142521424 its reverse (424125241), we get a palindrome (566646665).

The spelling of 142521424 in words is "one hundred forty-two million, five hundred twenty-one thousand, four hundred twenty-four".