421602113 has 2 divisors, whose sum is σ = 421602114. Its totient is φ = 421602112.

The previous prime is 421602107. The next prime is 421602127. The reversal of 421602113 is 311206124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232044289 + 189557824 = 15233^2 + 13768^2 .

It is a cyclic number.

It is not a de Polignac number, because 421602113 - 2⁸ = 421601857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_22425230 and since 421602113 and 22425230 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (421608113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210801056 + 210801057.

It is an arithmetic number, because the mean of its divisors is an integer number (210801057).

Almost surely, 2^421602113 is an apocalyptic number.

It is an amenable number.

421602113 is a deficient number, since it is larger than the sum of its proper divisors (1).

421602113 is an equidigital number, since it uses as much as digits as its factorization.

421602113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 421602113 is about 20532.9518822794. The cubic root of 421602113 is about 749.8382543055.

Adding to 421602113 its reverse (311206124), we get a palindrome (732808237).

The spelling of 421602113 in words is "four hundred twenty-one million, six hundred two thousand, one hundred thirteen".