18240141 has 8 divisors (see below), whose sum is σ = 24443200. Its totient is φ = 12098592.

The previous prime is 18240139. The next prime is 18240143. The reversal of 18240141 is 14104281.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18240139) and next prime (18240143).

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

It is not a de Polignac number, because 18240141 - 2¹ = 18240139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18240143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14680 + ... + 15873.

It is an arithmetic number, because the mean of its divisors is an integer number (3055400).

Almost surely, 2^18240141 is an apocalyptic number.

It is an amenable number.

18240141 is a deficient number, since it is larger than the sum of its proper divisors (6203059).

18240141 is a wasteful number, since it uses less digits than its factorization.

18240141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30755.

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

The square root of 18240141 is about 4270.8478081056. The cubic root of 18240141 is about 263.2344528967.

It can be divided in two parts, 18240 and 141, that added together give a palindrome (18381).

The spelling of 18240141 in words is "eighteen million, two hundred forty thousand, one hundred forty-one".