42548018 has 4 divisors (see below), whose sum is σ = 63822030. Its totient is φ = 21274008.

The previous prime is 42547997. The next prime is 42548063. The reversal of 42548018 is 81084524.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42471289 + 76729 = 6517^2 + 277^2 .

It is a super-3 number, since 3×42548018³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10637003 + ... + 10637006.

Almost surely, 2^42548018 is an apocalyptic number.

42548018 is a deficient number, since it is larger than the sum of its proper divisors (21274012).

42548018 is a wasteful number, since it uses less digits than its factorization.

42548018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21274011.

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 42548018 is about 6522.8841780305. The cubic root of 42548018 is about 349.1079815729.

The spelling of 42548018 in words is "forty-two million, five hundred forty-eight thousand, eighteen".