1142231201 has 4 divisors (see below), whose sum is σ = 1145834772. Its totient is φ = 1138627632.

The previous prime is 1142231183. The next prime is 1142231273. The reversal of 1142231201 is 1021322411.

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

It can be written as a sum of positive squares in 2 ways, for example, as 442681600 + 699549601 = 21040^2 + 26449^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142231201 - 2¹⁴ = 1142214817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1142231201.

It is not an unprimeable number, because it can be changed into a prime (1142231401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1801310 + ... + 1801943.

It is an arithmetic number, because the mean of its divisors is an integer number (286458693).

Almost surely, 2^1142231201 is an apocalyptic number.

It is an amenable number.

1142231201 is a deficient number, since it is larger than the sum of its proper divisors (3603571).

1142231201 is an equidigital number, since it uses as much as digits as its factorization.

1142231201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3603570.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1142231201 is about 33796.9111162544. The cubic root of 1142231201 is about 1045.3250062403.

Adding to 1142231201 its reverse (1021322411), we get a palindrome (2163553612).

The spelling of 1142231201 in words is "one billion, one hundred forty-two million, two hundred thirty-one thousand, two hundred one".