2420990321 has 2 divisors, whose sum is σ = 2420990322. Its totient is φ = 2420990320.

The previous prime is 2420990287. The next prime is 2420990329. The reversal of 2420990321 is 1230990242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2231239696 + 189750625 = 47236^2 + 13775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2420990321 is a prime.

It is a super-2 number, since 2×2420990321² = 11722388268751366082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2420990329) 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, 1210495160 + 1210495161.

It is an arithmetic number, because the mean of its divisors is an integer number (1210495161).

Almost surely, 2^2420990321 is an apocalyptic number.

It is an amenable number.

2420990321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2420990321 is an equidigital number, since it uses as much as digits as its factorization.

2420990321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 2420990321 is about 49203.5600439643. The cubic root of 2420990321 is about 1342.7578016700.

The spelling of 2420990321 in words is "two billion, four hundred twenty million, nine hundred ninety thousand, three hundred twenty-one".