420322117 has 2 divisors, whose sum is σ = 420322118. Its totient is φ = 420322116.

The previous prime is 420322103. The next prime is 420322139. The reversal of 420322117 is 711223024.

It is an a-pointer prime, because the next prime (420322139) can be obtained adding 420322117 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 328660641 + 91661476 = 18129^2 + 9574^2 .

It is a cyclic number.

It is not a de Polignac number, because 420322117 - 2¹⁵ = 420289349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420322187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210161058 + 210161059.

It is an arithmetic number, because the mean of its divisors is an integer number (210161059).

Almost surely, 2^420322117 is an apocalyptic number.

It is an amenable number.

420322117 is a deficient number, since it is larger than the sum of its proper divisors (1).

420322117 is an equidigital number, since it uses as much as digits as its factorization.

420322117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 420322117 is about 20501.7588757648. The cubic root of 420322117 is about 749.0786416322.

The spelling of 420322117 in words is "four hundred twenty million, three hundred twenty-two thousand, one hundred seventeen".