420736013 has 2 divisors, whose sum is σ = 420736014. Its totient is φ = 420736012.

The previous prime is 420735977. The next prime is 420736051. The reversal of 420736013 is 310637024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 326994889 + 93741124 = 18083^2 + 9682^2 .

It is a cyclic number.

It is not a de Polignac number, because 420736013 - 2¹² = 420731917 is a prime.

It is equal to p_22381613 and since 420736013 and 22381613 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420736073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210368006 + 210368007.

It is an arithmetic number, because the mean of its divisors is an integer number (210368007).

Almost surely, 2^420736013 is an apocalyptic number.

It is an amenable number.

420736013 is a deficient number, since it is larger than the sum of its proper divisors (1).

420736013 is an equidigital number, since it uses as much as digits as its factorization.

420736013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 420736013 is about 20511.8505503526. The cubic root of 420736013 is about 749.3244364086.

The spelling of 420736013 in words is "four hundred twenty million, seven hundred thirty-six thousand, thirteen".