142521042 has 32 divisors (see below), whose sum is σ = 288100800. Its totient is φ = 47000768.

The previous prime is 142521019. The next prime is 142521059. The reversal of 142521042 is 240125241.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 366184 + ... + 366572.

It is an arithmetic number, because the mean of its divisors is an integer number (9003150).

Almost surely, 2^142521042 is an apocalyptic number.

142521042 is an abundant number, since it is smaller than the sum of its proper divisors (145579758).

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

142521042 is a wasteful number, since it uses less digits than its factorization.

142521042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 142521042 is about 11938.2177061737. The cubic root of 142521042 is about 522.3476713827.

Adding to 142521042 its reverse (240125241), we get a palindrome (382646283).

The spelling of 142521042 in words is "one hundred forty-two million, five hundred twenty-one thousand, forty-two".