42013987 has 8 divisors (see below), whose sum is σ = 44659296. Its totient is φ = 39388032.

The previous prime is 42013969. The next prime is 42013991. The reversal of 42013987 is 78931024.

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

It is a cyclic number.

It is not a de Polignac number, because 42013987 - 2¹¹ = 42011939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42013957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228 + ... + 9169.

It is an arithmetic number, because the mean of its divisors is an integer number (5582412).

Almost surely, 2^42013987 is an apocalyptic number.

42013987 is a deficient number, since it is larger than the sum of its proper divisors (2645309).

42013987 is a wasteful number, since it uses less digits than its factorization.

42013987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9677.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 42013987 is about 6481.8197290576. The cubic root of 42013987 is about 347.6412468605.

The spelling of 42013987 in words is "forty-two million, thirteen thousand, nine hundred eighty-seven".