18042411 has 4 divisors (see below), whose sum is σ = 24056552. Its totient is φ = 12028272.

The previous prime is 18042361. The next prime is 18042463. The reversal of 18042411 is 11424081.

It is a happy number.

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

It is not a de Polignac number, because 18042411 - 2¹⁴ = 18026027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18042481) 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, 3007066 + ... + 3007071.

It is an arithmetic number, because the mean of its divisors is an integer number (6014138).

Almost surely, 2^18042411 is an apocalyptic number.

18042411 is a deficient number, since it is larger than the sum of its proper divisors (6014141).

18042411 is an equidigital number, since it uses as much as digits as its factorization.

18042411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6014140.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 18042411 is about 4247.6359307266. The cubic root of 18042411 is about 262.2798080926.

Adding to 18042411 its reverse (11424081), we get a palindrome (29466492).

The spelling of 18042411 in words is "eighteen million, forty-two thousand, four hundred eleven".