2436424021 has 2 divisors, whose sum is σ = 2436424022. Its totient is φ = 2436424020.

The previous prime is 2436424019. The next prime is 2436424031. The reversal of 2436424021 is 1204246342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2413756900 + 22667121 = 49130^2 + 4761^2 .

It is a cyclic number.

It is not a de Polignac number, because 2436424021 - 2¹ = 2436424019 is a prime.

Together with 2436424019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2436424031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1218212010 + 1218212011.

It is an arithmetic number, because the mean of its divisors is an integer number (1218212011).

Almost surely, 2^2436424021 is an apocalyptic number.

It is an amenable number.

2436424021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2436424021 is an equidigital number, since it uses as much as digits as its factorization.

2436424021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 2436424021 is about 49360.1460796056. The cubic root of 2436424021 is about 1345.6050991342.

The spelling of 2436424021 in words is "two billion, four hundred thirty-six million, four hundred twenty-four thousand, twenty-one".