16246642 has 4 divisors (see below), whose sum is σ = 24369966. Its totient is φ = 8123320.

The previous prime is 16246639. The next prime is 16246649. The reversal of 16246642 is 24664261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24664261 = 19 ⋅1298119.

It can be written as a sum of positive squares in only one way, i.e., 15452761 + 793881 = 3931^2 + 891^2 .

It is not an unprimeable number, because it can be changed into a prime (16246649) by changing a digit.

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, 4061659 + ... + 4061662.

Almost surely, 2^16246642 is an apocalyptic number.

16246642 is a deficient number, since it is larger than the sum of its proper divisors (8123324).

16246642 is an equidigital number, since it uses as much as digits as its factorization.

16246642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8123323.

The product of its digits is 13824, while the sum is 31.

The square root of 16246642 is about 4030.7123439908. The cubic root of 16246642 is about 253.2724026286.

The spelling of 16246642 in words is "sixteen million, two hundred forty-six thousand, six hundred forty-two".