142904442 has 16 divisors (see below), whose sum is σ = 286044192. Its totient is φ = 47595600.

The previous prime is 142904441. The next prime is 142904521. The reversal of 142904442 is 244409241.

It is not an unprimeable number, because it can be changed into a prime (142904441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1348 + ... + 16959.

It is an arithmetic number, because the mean of its divisors is an integer number (17877762).

Almost surely, 2^142904442 is an apocalyptic number.

142904442 is an abundant number, since it is smaller than the sum of its proper divisors (143139750).

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

142904442 is a wasteful number, since it uses less digits than its factorization.

142904442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19613.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 142904442 is about 11954.2645946959. The cubic root of 142904442 is about 522.8156462163.

The spelling of 142904442 in words is "one hundred forty-two million, nine hundred four thousand, four hundred forty-two".