42887442 has 16 divisors (see below), whose sum is σ = 92373120. Its totient is φ = 13196112.

The previous prime is 42887431. The next prime is 42887443. The reversal of 42887442 is 24478824.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 42887442.

It is not an unprimeable number, because it can be changed into a prime (42887443) 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, 274842 + ... + 274997.

It is an arithmetic number, because the mean of its divisors is an integer number (5773320).

Almost surely, 2^42887442 is an apocalyptic number.

42887442 is an abundant number, since it is smaller than the sum of its proper divisors (49485678).

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

42887442 is a wasteful number, since it uses less digits than its factorization.

42887442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549857.

The product of its digits is 114688, while the sum is 39.

The square root of 42887442 is about 6548.8504334730. The cubic root of 42887442 is about 350.0338525079.

The spelling of 42887442 in words is "forty-two million, eight hundred eighty-seven thousand, four hundred forty-two".