142004442 has 32 divisors (see below), whose sum is σ = 300787200. Its totient is φ = 44569008.

The previous prime is 142004431. The next prime is 142004449. The reversal of 142004442 is 244400241.

142004442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (142004449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15309 + ... + 22767.

It is an arithmetic number, because the mean of its divisors is an integer number (9399600).

Almost surely, 2^142004442 is an apocalyptic number.

142004442 is an abundant number, since it is smaller than the sum of its proper divisors (158782758).

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

142004442 is a wasteful number, since it uses less digits than its factorization.

142004442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7650.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 142004442 is about 11916.5616685351. The cubic root of 142004442 is about 521.7157845647.

Adding to 142004442 its reverse (244400241), we get a palindrome (386404683).

The spelling of 142004442 in words is "one hundred forty-two million, four thousand, four hundred forty-two".