420941117 has 2 divisors, whose sum is σ = 420941118. Its totient is φ = 420941116.

The previous prime is 420941113. The next prime is 420941149. The reversal of 420941117 is 711149024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 271392676 + 149548441 = 16474^2 + 12229^2 .

It is a cyclic number.

It is not a de Polignac number, because 420941117 - 2² = 420941113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420941117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420941113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210470558 + 210470559.

It is an arithmetic number, because the mean of its divisors is an integer number (210470559).

Almost surely, 2^420941117 is an apocalyptic number.

It is an amenable number.

420941117 is a deficient number, since it is larger than the sum of its proper divisors (1).

420941117 is an equidigital number, since it uses as much as digits as its factorization.

420941117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 420941117 is about 20516.8495875951. The cubic root of 420941117 is about 749.4461789956.

The spelling of 420941117 in words is "four hundred twenty million, nine hundred forty-one thousand, one hundred seventeen".