421361117 has 2 divisors, whose sum is σ = 421361118. Its totient is φ = 421361116.

The previous prime is 421361093. The next prime is 421361131. The reversal of 421361117 is 711163124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 374383801 + 46977316 = 19349^2 + 6854^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421361117 is a prime.

It is equal to p_22413059 and since 421361117 and 22413059 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 (421361137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210680558 + 210680559.

It is an arithmetic number, because the mean of its divisors is an integer number (210680559).

Almost surely, 2^421361117 is an apocalyptic number.

It is an amenable number.

421361117 is a deficient number, since it is larger than the sum of its proper divisors (1).

421361117 is an equidigital number, since it uses as much as digits as its factorization.

421361117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 26.

The square root of 421361117 is about 20527.0825252884. The cubic root of 421361117 is about 749.6953530111.

The spelling of 421361117 in words is "four hundred twenty-one million, three hundred sixty-one thousand, one hundred seventeen".