1129027201 has 3 divisors (see below), whose sum is σ = 1129060803. Its totient is φ = 1128993600.

The previous prime is 1129027199. The next prime is 1129027219. The reversal of 1129027201 is 1027209211.

The square root of 1129027201 is 33601.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 8116801 + 1120910400 = 2849^2 + 33480^2 .

It is not a de Polignac number, because 1129027201 - 2¹ = 1129027199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1129027231) 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 2 ways as a sum of consecutive naturals, for example, 16801 + ... + 50401.

It is an arithmetic number, because the mean of its divisors is an integer number (376353601).

Almost surely, 2^1129027201 is an apocalyptic number.

1129027201 is the 33601-st square number.

1129027201 is the 16801-st centered octagonal number.

It is an amenable number.

1129027201 is a deficient number, since it is larger than the sum of its proper divisors (33602).

1129027201 is an frugal number, since it uses more digits than its factorization.

1129027201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67202 (or 33601 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 25.

The cubic root of 1129027201 is about 1041.2814581590.

Multiplying 1129027201 by its sum of digits (25), we get a square (28225680025 = 168005²).

The spelling of 1129027201 in words is "one billion, one hundred twenty-nine million, twenty-seven thousand, two hundred one".