42357018 has 48 divisors (see below), whose sum is σ = 95453568. Its totient is φ = 12513600.

The previous prime is 42356983. The next prime is 42357019. The reversal of 42357018 is 81075324.

It is not an unprimeable number, because it can be changed into a prime (42357019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29055 + ... + 30477.

It is an arithmetic number, because the mean of its divisors is an integer number (1988616).

Almost surely, 2^42357018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42357018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47726784).

42357018 is an abundant number, since it is smaller than the sum of its proper divisors (53096550).

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

42357018 is a wasteful number, since it uses less digits than its factorization.

42357018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491 (or 1480 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 42357018 is about 6508.2269474873. The cubic root of 42357018 is about 348.5848107089.

The spelling of 42357018 in words is "forty-two million, three hundred fifty-seven thousand, eighteen".