42987018 has 32 divisors (see below), whose sum is σ = 89210880. Its totient is φ = 13794480.

The previous prime is 42987011. The next prime is 42987037. The reversal of 42987018 is 81078924.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42987011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43971 + ... + 44937.

It is an arithmetic number, because the mean of its divisors is an integer number (2787840).

Almost surely, 2^42987018 is an apocalyptic number.

42987018 is an abundant number, since it is smaller than the sum of its proper divisors (46223862).

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

42987018 is a wasteful number, since it uses less digits than its factorization.

42987018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 42987018 is about 6556.4485813587. The cubic root of 42987018 is about 350.3045458128.

The spelling of 42987018 in words is "forty-two million, nine hundred eighty-seven thousand, eighteen".