201492 has 36 divisors (see below), whose sum is σ = 529620. Its totient is φ = 64512.

The previous prime is 201491. The next prime is 201493. The reversal of 201492 is 294102.

It is an interprime number because it is at equal distance from previous prime (201491) and next prime (201493).

It can be written as a sum of positive squares in 2 ways, for example, as 76176 + 125316 = 276^2 + 354^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 948 + ... + 1140.

2²⁰¹⁴⁹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264810).

201492 is an abundant number, since it is smaller than the sum of its proper divisors (328128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201492 is a wasteful number, since it uses less digits than its factorization.

201492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 201492 is about 448.8786027424. The cubic root of 201492 is about 58.6254157905.

Adding to 201492 its reverse (294102), we get a palindrome (495594).

The spelling of 201492 in words is "two hundred one thousand, four hundred ninety-two".