42258018 has 32 divisors (see below), whose sum is σ = 92757312. Its totient is φ = 12728000.

The previous prime is 42257989. The next prime is 42258031. The reversal of 42258018 is 81085224.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9568 + ... + 13268.

It is an arithmetic number, because the mean of its divisors is an integer number (2898666).

Almost surely, 2^42258018 is an apocalyptic number.

42258018 is an abundant number, since it is smaller than the sum of its proper divisors (50499294).

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

42258018 is a wasteful number, since it uses less digits than its factorization.

42258018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3890.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 42258018 is about 6500.6167399717. The cubic root of 42258018 is about 348.3130193252.

The spelling of 42258018 in words is "forty-two million, two hundred fifty-eight thousand, eighteen".