420422117 has 2 divisors, whose sum is σ = 420422118. Its totient is φ = 420422116.

The previous prime is 420422113. The next prime is 420422131. The reversal of 420422117 is 711224024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212168356 + 208253761 = 14566^2 + 14431^2 .

It is a cyclic number.

It is not a de Polignac number, because 420422117 - 2² = 420422113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420422092 and 420422101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420422113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210211058 + 210211059.

It is an arithmetic number, because the mean of its divisors is an integer number (210211059).

Almost surely, 2^420422117 is an apocalyptic number.

It is an amenable number.

420422117 is a deficient number, since it is larger than the sum of its proper divisors (1).

420422117 is an equidigital number, since it uses as much as digits as its factorization.

420422117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 420422117 is about 20504.1975458685. The cubic root of 420422117 is about 749.1380420471.

The spelling of 420422117 in words is "four hundred twenty million, four hundred twenty-two thousand, one hundred seventeen".