442686542 has 16 divisors (see below), whose sum is σ = 670003152. Its totient is φ = 219360960.

The previous prime is 442686523. The next prime is 442686571. The reversal of 442686542 is 245686244.

It is a self number, because there is not a number n which added to its sum of digits gives 442686542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111353 + ... + 115259.

It is an arithmetic number, because the mean of its divisors is an integer number (41875197).

Almost surely, 2^442686542 is an apocalyptic number.

442686542 is a deficient number, since it is larger than the sum of its proper divisors (227316610).

442686542 is a wasteful number, since it uses less digits than its factorization.

442686542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4403.

The product of its digits is 368640, while the sum is 41.

The square root of 442686542 is about 21040.1174426380. The cubic root of 442686542 is about 762.1353509312.

The spelling of 442686542 in words is "four hundred forty-two million, six hundred eighty-six thousand, five hundred forty-two".