2420023621 has 2 divisors, whose sum is σ = 2420023622. Its totient is φ = 2420023620.

The previous prime is 2420023603. The next prime is 2420023631. The reversal of 2420023621 is 1263200242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2226424225 + 193599396 = 47185^2 + 13914^2 .

It is a cyclic number.

It is not a de Polignac number, because 2420023621 - 2⁷ = 2420023493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2420023592 and 2420023601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2420023631) 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, 1210011810 + 1210011811.

It is an arithmetic number, because the mean of its divisors is an integer number (1210011811).

Almost surely, 2^2420023621 is an apocalyptic number.

It is an amenable number.

2420023621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2420023621 is an equidigital number, since it uses as much as digits as its factorization.

2420023621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2420023621 is about 49193.7355869627. The cubic root of 2420023621 is about 1342.5790570790.

Adding to 2420023621 its reverse (1263200242), we get a palindrome (3683223863).

The spelling of 2420023621 in words is "two billion, four hundred twenty million, twenty-three thousand, six hundred twenty-one".