201500126 has 4 divisors (see below), whose sum is σ = 302250192. Its totient is φ = 100750062.

The previous prime is 201500087. The next prime is 201500161. The reversal of 201500126 is 621005102.

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

It is a Curzon number.

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 as a sum of consecutive naturals, namely, 50375030 + ... + 50375033.

It is an arithmetic number, because the mean of its divisors is an integer number (75562548).

Almost surely, 2^201500126 is an apocalyptic number.

201500126 is a deficient number, since it is larger than the sum of its proper divisors (100750066).

201500126 is a wasteful number, since it uses less digits than its factorization.

201500126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100750065.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 201500126 is about 14195.0740047384. The cubic root of 201500126 is about 586.2620388415.

Adding to 201500126 its reverse (621005102), we get a palindrome (822505228).

The spelling of 201500126 in words is "two hundred one million, five hundred thousand, one hundred twenty-six".