20418141 has 8 divisors (see below), whose sum is σ = 28657120. Its totient is φ = 12895632.

The previous prime is 20418137. The next prime is 20418157. The reversal of 20418141 is 14181402.

It is a happy number.

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

It is not a de Polignac number, because 20418141 - 2² = 20418137 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 (20418121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179050 + ... + 179163.

It is an arithmetic number, because the mean of its divisors is an integer number (3582140).

Almost surely, 2^20418141 is an apocalyptic number.

It is an amenable number.

20418141 is a deficient number, since it is larger than the sum of its proper divisors (8238979).

20418141 is a wasteful number, since it uses less digits than its factorization.

20418141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358235.

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

The square root of 20418141 is about 4518.6437124429. The cubic root of 20418141 is about 273.3204116768.

Adding to 20418141 its reverse (14181402), we get a palindrome (34599543).

The spelling of 20418141 in words is "twenty million, four hundred eighteen thousand, one hundred forty-one".