2421010309 has 2 divisors, whose sum is σ = 2421010310. Its totient is φ = 2421010308.

The previous prime is 2421010303. The next prime is 2421010349. The reversal of 2421010309 is 9030101242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2311494084 + 109516225 = 48078^2 + 10465^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421010309 - 2³ = 2421010301 is a prime.

It is a super-2 number, since 2×2421010309² = 11722581832568550962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2421010309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2421010301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210505154 + 1210505155.

It is an arithmetic number, because the mean of its divisors is an integer number (1210505155).

Almost surely, 2^2421010309 is an apocalyptic number.

It is an amenable number.

2421010309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421010309 is an equidigital number, since it uses as much as digits as its factorization.

2421010309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 2421010309 is about 49203.7631589292. The cubic root of 2421010309 is about 1342.7614969855.

The spelling of 2421010309 in words is "two billion, four hundred twenty-one million, ten thousand, three hundred nine".