201420194 has 8 divisors (see below), whose sum is σ = 302220828. Its totient is φ = 100679920.

The previous prime is 201420187. The next prime is 201420253. The reversal of 201420194 is 491024102.

It can be written as a sum of positive squares in 2 ways, for example, as 195636169 + 5784025 = 13987^2 + 2405^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5537 + ... + 20820.

Almost surely, 2^201420194 is an apocalyptic number.

201420194 is a deficient number, since it is larger than the sum of its proper divisors (100800634).

201420194 is a wasteful number, since it uses less digits than its factorization.

201420194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30180.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 201420194 is about 14192.2582417317. The cubic root of 201420194 is about 586.1845082117.

Adding to 201420194 its reverse (491024102), we get a palindrome (692444296).

The spelling of 201420194 in words is "two hundred one million, four hundred twenty thousand, one hundred ninety-four".