42987055 has 8 divisors (see below), whose sum is σ = 51652944. Its totient is φ = 34344000.

The previous prime is 42987053. The next prime is 42987059. The reversal of 42987055 is 55078924.

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

It is not a de Polignac number, because 42987055 - 2¹ = 42987053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42986999 and 42987017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42987053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1246 + ... + 9355.

It is an arithmetic number, because the mean of its divisors is an integer number (6456618).

Almost surely, 2^42987055 is an apocalyptic number.

42987055 is a deficient number, since it is larger than the sum of its proper divisors (8665889).

42987055 is a wasteful number, since it uses less digits than its factorization.

42987055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11417.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 42987055 is about 6556.4514030076. The cubic root of 42987055 is about 350.3046463180.

The spelling of 42987055 in words is "forty-two million, nine hundred eighty-seven thousand, fifty-five".