13842418 has 4 divisors (see below), whose sum is σ = 20763630. Its totient is φ = 6921208.

The previous prime is 13842407. The next prime is 13842419. The reversal of 13842418 is 81424831.

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

It can be written as a sum of positive squares in only one way, i.e., 10804369 + 3038049 = 3287^2 + 1743^2 .

It is a super-2 number, since 2×13842418² = 383225072173448, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 13842418.

It is not an unprimeable number, because it can be changed into a prime (13842419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3460603 + ... + 3460606.

Almost surely, 2^13842418 is an apocalyptic number.

13842418 is a deficient number, since it is larger than the sum of its proper divisors (6921212).

13842418 is an equidigital number, since it uses as much as digits as its factorization.

13842418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6921211.

The product of its digits is 6144, while the sum is 31.

The square root of 13842418 is about 3720.5400145678. The cubic root of 13842418 is about 240.1065383477.

The spelling of 13842418 in words is "thirteen million, eight hundred forty-two thousand, four hundred eighteen".