424242913 has 2 divisors, whose sum is σ = 424242914. Its totient is φ = 424242912.

The previous prime is 424242893. The next prime is 424242919. The reversal of 424242913 is 319242424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 422425809 + 1817104 = 20553^2 + 1348^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424242913 is a prime.

It is not a weakly prime, because it can be changed into another prime (424242919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212121456 + 212121457.

It is an arithmetic number, because the mean of its divisors is an integer number (212121457).

Almost surely, 2^424242913 is an apocalyptic number.

It is an amenable number.

424242913 is a deficient number, since it is larger than the sum of its proper divisors (1).

424242913 is an equidigital number, since it uses as much as digits as its factorization.

424242913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 31.

The square root of 424242913 is about 20597.1578864658. The cubic root of 424242913 is about 751.4005905371.

The spelling of 424242913 in words is "four hundred twenty-four million, two hundred forty-two thousand, nine hundred thirteen".