2421990305 has 16 divisors (see below), whose sum is σ = 3322704000. Its totient is φ = 1660234752.

The previous prime is 2421990301. The next prime is 2421990313. The reversal of 2421990305 is 5030991242.

It is a cyclic number.

It is not a de Polignac number, because 2421990305 - 2² = 2421990301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (2421990301) 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 in 15 ways as a sum of consecutive naturals, for example, 112577 + ... + 132353.

It is an arithmetic number, because the mean of its divisors is an integer number (207669000).

Almost surely, 2^2421990305 is an apocalyptic number.

It is an amenable number.

2421990305 is a deficient number, since it is larger than the sum of its proper divisors (900713695).

2421990305 is a wasteful number, since it uses less digits than its factorization.

2421990305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23288.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 2421990305 is about 49213.7206986019. The cubic root of 2421990305 is about 1342.9426504730.

The spelling of 2421990305 in words is "two billion, four hundred twenty-one million, nine hundred ninety thousand, three hundred five".