420101173 has 4 divisors (see below), whose sum is σ = 420612448. Its totient is φ = 419589900.

The previous prime is 420101159. The next prime is 420101197. The reversal of 420101173 is 371101024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420101173 - 2⁹ = 420100661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420101173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420101113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254403 + ... + 256048.

It is an arithmetic number, because the mean of its divisors is an integer number (105153112).

Almost surely, 2^420101173 is an apocalyptic number.

It is an amenable number.

420101173 is a deficient number, since it is larger than the sum of its proper divisors (511275).

420101173 is an equidigital number, since it uses as much as digits as its factorization.

420101173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511274.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 420101173 is about 20496.3697517390. The cubic root of 420101173 is about 748.9473665676.

Adding to 420101173 its reverse (371101024), we get a palindrome (791202197).

The spelling of 420101173 in words is "four hundred twenty million, one hundred one thousand, one hundred seventy-three".