420254193 has 16 divisors (see below), whose sum is σ = 570338496. Its totient is φ = 275183040.

The previous prime is 420254189. The next prime is 420254209. The reversal of 420254193 is 391452024.

It is not a de Polignac number, because 420254193 - 2² = 420254189 is a prime.

It is a super-2 number, since 2×420254193² = 353227173468162498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 420254193.

It is not an unprimeable number, because it can be changed into a prime (420254123) 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, 184246 + ... + 186512.

It is an arithmetic number, because the mean of its divisors is an integer number (35646156).

Almost surely, 2^420254193 is an apocalyptic number.

It is an amenable number.

420254193 is a deficient number, since it is larger than the sum of its proper divisors (150084303).

420254193 is a wasteful number, since it uses less digits than its factorization.

420254193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3344.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 420254193 is about 20500.1022680376. The cubic root of 420254193 is about 749.0382891211.

The spelling of 420254193 in words is "four hundred twenty million, two hundred fifty-four thousand, one hundred ninety-three".