201810742 has 16 divisors (see below), whose sum is σ = 364170240. Its totient is φ = 81938088.

The previous prime is 201810737. The next prime is 201810751. The reversal of 201810742 is 247018102.

It is a happy number.

201810742 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 379078 + ... + 379609.

It is an arithmetic number, because the mean of its divisors is an integer number (22760640).

Almost surely, 2^201810742 is an apocalyptic number.

201810742 is a deficient number, since it is larger than the sum of its proper divisors (162359498).

201810742 is a wasteful number, since it uses less digits than its factorization.

201810742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758715.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 201810742 is about 14206.0107700931. The cubic root of 201810742 is about 586.5631286089.

Adding to 201810742 its reverse (247018102), we get a palindrome (448828844).

The spelling of 201810742 in words is "two hundred one million, eight hundred ten thousand, seven hundred forty-two".