421500113 has 2 divisors, whose sum is σ = 421500114. Its totient is φ = 421500112.

The previous prime is 421500103. The next prime is 421500197. The reversal of 421500113 is 311005124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 325008784 + 96491329 = 18028^2 + 9823^2 .

It is a cyclic number.

It is not a de Polignac number, because 421500113 - 2¹⁶ = 421434577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421500091 and 421500100.

It is not a weakly prime, because it can be changed into another prime (421500103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210750056 + 210750057.

It is an arithmetic number, because the mean of its divisors is an integer number (210750057).

Almost surely, 2^421500113 is an apocalyptic number.

It is an amenable number.

421500113 is a deficient number, since it is larger than the sum of its proper divisors (1).

421500113 is an equidigital number, since it uses as much as digits as its factorization.

421500113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 421500113 is about 20530.4679196554. The cubic root of 421500113 is about 749.7777789043. Note that the first 5 decimals are identical.

Adding to 421500113 its reverse (311005124), we get a palindrome (732505237).

The spelling of 421500113 in words is "four hundred twenty-one million, five hundred thousand, one hundred thirteen".