201354421 has 4 divisors (see below), whose sum is σ = 201755232. Its totient is φ = 200953612.

The previous prime is 201354379. The next prime is 201354451. The reversal of 201354421 is 124453102.

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 201354421 - 2²¹ = 199257269 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201354392 and 201354401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201354451) by changing a digit.

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, 199651 + ... + 200656.

It is an arithmetic number, because the mean of its divisors is an integer number (50438808).

Almost surely, 2^201354421 is an apocalyptic number.

It is an amenable number.

201354421 is a deficient number, since it is larger than the sum of its proper divisors (400811).

201354421 is an equidigital number, since it uses as much as digits as its factorization.

201354421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400810.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 201354421 is about 14189.9408384954. The cubic root of 201354421 is about 586.1206958231.

The spelling of 201354421 in words is "two hundred one million, three hundred fifty-four thousand, four hundred twenty-one".