420314173 has 2 divisors, whose sum is σ = 420314174. Its totient is φ = 420314172.

The previous prime is 420314149. The next prime is 420314179. The reversal of 420314173 is 371413024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244672164 + 175642009 = 15642^2 + 13253^2 .

It is a cyclic number.

It is not a de Polignac number, because 420314173 - 2¹³ = 420305981 is a prime.

It is equal to p_22360255 and since 420314173 and 22360255 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 (420314179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210157086 + 210157087.

It is an arithmetic number, because the mean of its divisors is an integer number (210157087).

Almost surely, 2^420314173 is an apocalyptic number.

It is an amenable number.

420314173 is a deficient number, since it is larger than the sum of its proper divisors (1).

420314173 is an equidigital number, since it uses as much as digits as its factorization.

420314173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 420314173 is about 20501.5651353744. The cubic root of 420314173 is about 749.0739224593.

Adding to 420314173 its reverse (371413024), we get a palindrome (791727197).

The spelling of 420314173 in words is "four hundred twenty million, three hundred fourteen thousand, one hundred seventy-three".