42426618 has 64 divisors (see below), whose sum is σ = 95219712. Its totient is φ = 12519360.

The previous prime is 42426613. The next prime is 42426619. The reversal of 42426618 is 81662424.

42426618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (42426613) 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 31 ways as a sum of consecutive naturals, for example, 260205 + ... + 260367.

It is an arithmetic number, because the mean of its divisors is an integer number (1487808).

Almost surely, 2^42426618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42426618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47609856).

42426618 is an abundant number, since it is smaller than the sum of its proper divisors (52793094).

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

42426618 is a wasteful number, since it uses less digits than its factorization.

42426618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299.

The product of its digits is 18432, while the sum is 33.

The square root of 42426618 is about 6513.5718311845. The cubic root of 42426618 is about 348.7756348624.

The spelling of 42426618 in words is "forty-two million, four hundred twenty-six thousand, six hundred eighteen".