42987822 has 16 divisors (see below), whose sum is σ = 86828112. Its totient is φ = 14187200.

The previous prime is 42987787. The next prime is 42987839. The reversal of 42987822 is 22878924.

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, 34863 + ... + 36074.

It is an arithmetic number, because the mean of its divisors is an integer number (5426757).

Almost surely, 2^42987822 is an apocalyptic number.

42987822 is an abundant number, since it is smaller than the sum of its proper divisors (43840290).

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

42987822 is a wasteful number, since it uses less digits than its factorization.

42987822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71043.

The product of its digits is 129024, while the sum is 42.

The square root of 42987822 is about 6556.5098947535. The cubic root of 42987822 is about 350.3067297520.

The spelling of 42987822 in words is "forty-two million, nine hundred eighty-seven thousand, eight hundred twenty-two".