420194 has 4 divisors (see below), whose sum is σ = 630294. Its totient is φ = 210096.

The previous prime is 420193. The next prime is 420221. The reversal of 420194 is 491024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 344569 + 75625 = 587^2 + 275^2 .

It is not an unprimeable number, because it can be changed into a prime (420191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105047 + ... + 105050.

2⁴²⁰¹⁹⁴ is an apocalyptic number.

420194 is a deficient number, since it is larger than the sum of its proper divisors (210100).

420194 is a wasteful number, since it uses less digits than its factorization.

420194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210099.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 420194 is about 648.2237268104. The cubic root of 420194 is about 74.9002525834.

The spelling of 420194 in words is "four hundred twenty thousand, one hundred ninety-four".