42303818 has 8 divisors (see below), whose sum is σ = 63775200. Its totient is φ = 21045420.

The previous prime is 42303817. The next prime is 42303829. The reversal of 42303818 is 81830324.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×42303818² = 3579226034754248, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42303817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52748 + ... + 53543.

It is an arithmetic number, because the mean of its divisors is an integer number (7971900).

Almost surely, 2^42303818 is an apocalyptic number.

42303818 is a deficient number, since it is larger than the sum of its proper divisors (21471382).

42303818 is a wasteful number, since it uses less digits than its factorization.

42303818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106492.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 42303818 is about 6504.1385286600. The cubic root of 42303818 is about 348.4388098632.

The spelling of 42303818 in words is "forty-two million, three hundred three thousand, eight hundred eighteen".