42648918 has 16 divisors (see below), whose sum is σ = 91859376. Its totient is φ = 13122720.

The previous prime is 42648911. The next prime is 42648929. The reversal of 42648918 is 81984624.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42648918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42648911) 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, 273313 + ... + 273468.

It is an arithmetic number, because the mean of its divisors is an integer number (5741211).

Almost surely, 2^42648918 is an apocalyptic number.

42648918 is an abundant number, since it is smaller than the sum of its proper divisors (49210458).

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

42648918 is a wasteful number, since it uses less digits than its factorization.

42648918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546799.

The product of its digits is 110592, while the sum is 42.

The square root of 42648918 is about 6530.6139068238. The cubic root of 42648918 is about 349.3837263979.

The spelling of 42648918 in words is "forty-two million, six hundred forty-eight thousand, nine hundred eighteen".