420349173 has 16 divisors (see below), whose sum is σ = 590633856. Its totient is φ = 265390400.

The previous prime is 420349169. The next prime is 420349183. The reversal of 420349173 is 371943024.

It is a cyclic number.

It is not a de Polignac number, because 420349173 - 2² = 420349169 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420349133) 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 15 ways as a sum of consecutive naturals, for example, 23190 + ... + 37127.

It is an arithmetic number, because the mean of its divisors is an integer number (36914616).

Almost surely, 2^420349173 is an apocalyptic number.

It is an amenable number.

420349173 is a deficient number, since it is larger than the sum of its proper divisors (170284683).

420349173 is a wasteful number, since it uses less digits than its factorization.

420349173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60444.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 420349173 is about 20502.4187109716. The cubic root of 420349173 is about 749.0947139381.

The spelling of 420349173 in words is "four hundred twenty million, three hundred forty-nine thousand, one hundred seventy-three".