442000142 has 4 divisors (see below), whose sum is σ = 663000216. Its totient is φ = 221000070.

The previous prime is 442000127. The next prime is 442000159. The reversal of 442000142 is 241000244.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 442000142.

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 as a sum of consecutive naturals, namely, 110500034 + ... + 110500037.

It is an arithmetic number, because the mean of its divisors is an integer number (165750054).

Almost surely, 2^442000142 is an apocalyptic number.

442000142 is a deficient number, since it is larger than the sum of its proper divisors (221000074).

442000142 is a wasteful number, since it uses less digits than its factorization.

442000142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221000073.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 442000142 is about 21023.7994187540. The cubic root of 442000142 is about 761.7412418834.

Adding to 442000142 its reverse (241000244), we get a palindrome (683000386).

The spelling of 442000142 in words is "four hundred forty-two million, one hundred forty-two", and thus it is an aban number.