20042018 has 8 divisors (see below), whose sum is σ = 30084048. Its totient is φ = 10014004.

The previous prime is 20041981. The next prime is 20042041. The reversal of 20042018 is 81024002.

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

It is a junction number, because it is equal to n+sod(n) for n = 20041987 and 20042005.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1505 + ... + 6507.

It is an arithmetic number, because the mean of its divisors is an integer number (3760506).

Almost surely, 2^20042018 is an apocalyptic number.

20042018 is a deficient number, since it is larger than the sum of its proper divisors (10042030).

20042018 is a wasteful number, since it uses less digits than its factorization.

20042018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7008.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 20042018 is about 4476.8312454235. The cubic root of 20042018 is about 271.6317193598.

The spelling of 20042018 in words is "twenty million, forty-two thousand, eighteen".