421013113 has 2 divisors, whose sum is σ = 421013114. Its totient is φ = 421013112.

The previous prime is 421013083. The next prime is 421013123. The reversal of 421013113 is 311310124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257377849 + 163635264 = 16043^2 + 12792^2 .

It is a cyclic number.

It is not a de Polignac number, because 421013113 - 2¹⁷ = 420882041 is a prime.

It is not a weakly prime, because it can be changed into another prime (421013123) 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, 210506556 + 210506557.

It is an arithmetic number, because the mean of its divisors is an integer number (210506557).

Almost surely, 2^421013113 is an apocalyptic number.

It is an amenable number.

421013113 is a deficient number, since it is larger than the sum of its proper divisors (1).

421013113 is an equidigital number, since it uses as much as digits as its factorization.

421013113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 421013113 is about 20518.6040704527. The cubic root of 421013113 is about 749.4889039350.

Adding to 421013113 its reverse (311310124), we get a palindrome (732323237).

The spelling of 421013113 in words is "four hundred twenty-one million, thirteen thousand, one hundred thirteen".