421492613 has 2 divisors, whose sum is σ = 421492614. Its totient is φ = 421492612.

The previous prime is 421492601. The next prime is 421492639. The reversal of 421492613 is 316294124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 286049569 + 135443044 = 16913^2 + 11638^2 .

It is a cyclic number.

It is not a de Polignac number, because 421492613 - 2¹⁰ = 421491589 is a prime.

It is equal to p_22419716 and since 421492613 and 22419716 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421492613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421491613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210746306 + 210746307.

It is an arithmetic number, because the mean of its divisors is an integer number (210746307).

Almost surely, 2^421492613 is an apocalyptic number.

It is an amenable number.

421492613 is a deficient number, since it is larger than the sum of its proper divisors (1).

421492613 is an equidigital number, since it uses as much as digits as its factorization.

421492613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 32.

The square root of 421492613 is about 20530.2852634833. The cubic root of 421492613 is about 749.7733317986.

The spelling of 421492613 in words is "four hundred twenty-one million, four hundred ninety-two thousand, six hundred thirteen".