20042299 has 2 divisors, whose sum is σ = 20042300. Its totient is φ = 20042298.

The previous prime is 20042287. The next prime is 20042327. The reversal of 20042299 is 99224002.

It is a happy number.

It is an a-pointer prime, because the next prime (20042327) can be obtained adding 20042299 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20042299 - 2¹³ = 20034107 is a prime.

It is not a weakly prime, because it can be changed into another prime (20042249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021149 + 10021150.

It is an arithmetic number, because the mean of its divisors is an integer number (10021150).

Almost surely, 2^20042299 is an apocalyptic number.

20042299 is a deficient number, since it is larger than the sum of its proper divisors (1).

20042299 is an equidigital number, since it uses as much as digits as its factorization.

20042299 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 28.

The square root of 20042299 is about 4476.8626291187. The cubic root of 20042299 is about 271.6329888288.

The spelling of 20042299 in words is "twenty million, forty-two thousand, two hundred ninety-nine".