201442453 has 4 divisors (see below), whose sum is σ = 205243308. Its totient is φ = 197641600.

The previous prime is 201442429. The next prime is 201442457. The reversal of 201442453 is 354244102.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 89548369 + 111894084 = 9463^2 + 10578^2 .

It is a cyclic number.

It is not a de Polignac number, because 201442453 - 2⁵ = 201442421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201442457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1900348 + ... + 1900453.

It is an arithmetic number, because the mean of its divisors is an integer number (51310827).

Almost surely, 2^201442453 is an apocalyptic number.

It is an amenable number.

201442453 is a deficient number, since it is larger than the sum of its proper divisors (3800855).

201442453 is an equidigital number, since it uses as much as digits as its factorization.

201442453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800854.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 201442453 is about 14193.0424152118. The cubic root of 201442453 is about 586.2061005524.

Adding to 201442453 its reverse (354244102), we get a palindrome (555686555).

The spelling of 201442453 in words is "two hundred one million, four hundred forty-two thousand, four hundred fifty-three".