16642033 has 2 divisors, whose sum is σ = 16642034. Its totient is φ = 16642032.

The previous prime is 16642013. The next prime is 16642039. The reversal of 16642033 is 33024661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8958049 + 7683984 = 2993^2 + 2772^2 .

It is a cyclic number.

It is not a de Polignac number, because 16642033 - 2⁵ = 16642001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16641989 and 16642007.

It is not a weakly prime, because it can be changed into another prime (16642039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8321016 + 8321017.

It is an arithmetic number, because the mean of its divisors is an integer number (8321017).

Almost surely, 2^16642033 is an apocalyptic number.

It is an amenable number.

16642033 is a deficient number, since it is larger than the sum of its proper divisors (1).

16642033 is an equidigital number, since it uses as much as digits as its factorization.

16642033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 16642033 is about 4079.4647933277. The cubic root of 16642033 is about 255.3105686714.

Adding to 16642033 its reverse (33024661), we get a palindrome (49666694).

The spelling of 16642033 in words is "sixteen million, six hundred forty-two thousand, thirty-three".