42598018 has 4 divisors (see below), whose sum is σ = 63897030. Its totient is φ = 21299008.

The previous prime is 42597979. The next prime is 42598097. The reversal of 42598018 is 81089524.

42598018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 21557449 + 21040569 = 4643^2 + 4587^2 .

It is a super-2 number, since 2×42598018² = 3629182275056648, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10649503 + ... + 10649506.

Almost surely, 2^42598018 is an apocalyptic number.

42598018 is a deficient number, since it is larger than the sum of its proper divisors (21299012).

42598018 is a wasteful number, since it uses less digits than its factorization.

42598018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21299011.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 42598018 is about 6526.7157131286. The cubic root of 42598018 is about 349.2446786259.

The spelling of 42598018 in words is "forty-two million, five hundred ninety-eight thousand, eighteen".