42002387 has 8 divisors (see below), whose sum is σ = 48444000. Its totient is φ = 35671104.

The previous prime is 42002383. The next prime is 42002431. The reversal of 42002387 is 78320024.

42002387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42002387 - 2² = 42002383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42002383) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 26762 + ... + 28287.

It is an arithmetic number, because the mean of its divisors is an integer number (6055500).

Almost surely, 2^42002387 is an apocalyptic number.

42002387 is a deficient number, since it is larger than the sum of its proper divisors (6441613).

42002387 is a wasteful number, since it uses less digits than its factorization.

42002387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55165.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 42002387 is about 6480.9248568395. The cubic root of 42002387 is about 347.6092495033.

The spelling of 42002387 in words is "forty-two million, two thousand, three hundred eighty-seven".