201452123 has 4 divisors (see below), whose sum is σ = 203715720. Its totient is φ = 199188528.

The previous prime is 201452107. The next prime is 201452143. The reversal of 201452123 is 321254102.

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

It is a cyclic number.

It is not a de Polignac number, because 201452123 - 2⁴ = 201452107 is a prime.

It is a super-2 number, since 2×201452123² = 81165915722414258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201452095 and 201452104.

It is not an unprimeable number, because it can be changed into a prime (201452143) 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 3 ways as a sum of consecutive naturals, for example, 1131665 + ... + 1131842.

It is an arithmetic number, because the mean of its divisors is an integer number (50928930).

Almost surely, 2^201452123 is an apocalyptic number.

201452123 is a deficient number, since it is larger than the sum of its proper divisors (2263597).

201452123 is an equidigital number, since it uses as much as digits as its factorization.

201452123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263596.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 201452123 is about 14193.3830709947. The cubic root of 201452123 is about 586.2154804394.

The spelling of 201452123 in words is "two hundred one million, four hundred fifty-two thousand, one hundred twenty-three".