2002120247 has 2 divisors, whose sum is σ = 2002120248. Its totient is φ = 2002120246.

The previous prime is 2002120163. The next prime is 2002120279. The reversal of 2002120247 is 7420212002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2002120247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002120297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001060123 + 1001060124.

It is an arithmetic number, because the mean of its divisors is an integer number (1001060124).

Almost surely, 2^2002120247 is an apocalyptic number.

2002120247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002120247 is an equidigital number, since it uses as much as digits as its factorization.

2002120247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 2002120247 is about 44745.0583528505. The cubic root of 2002120247 is about 1260.3661166277.

Adding to 2002120247 its reverse (7420212002), we get a palindrome (9422332249).

The spelling of 2002120247 in words is "two billion, two million, one hundred twenty thousand, two hundred forty-seven".