16242418 has 4 divisors (see below), whose sum is σ = 24363630. Its totient is φ = 8121208.

The previous prime is 16242403. The next prime is 16242431. The reversal of 16242418 is 81424261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81424261 = 1783 ⋅45667.

It can be written as a sum of positive squares in only one way, i.e., 14160169 + 2082249 = 3763^2 + 1443^2 .

It is a super-2 number, since 2×16242418² = 527632284973448, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4060603 + ... + 4060606.

Almost surely, 2^16242418 is an apocalyptic number.

16242418 is a deficient number, since it is larger than the sum of its proper divisors (8121212).

16242418 is an equidigital number, since it uses as much as digits as its factorization.

16242418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8121211.

The product of its digits is 3072, while the sum is 28.

The square root of 16242418 is about 4030.1883330683. The cubic root of 16242418 is about 253.2504511107.

Adding to 16242418 its reverse (81424261), we get a palindrome (97666679).

The spelling of 16242418 in words is "sixteen million, two hundred forty-two thousand, four hundred eighteen".