1143242201 has 4 divisors (see below), whose sum is σ = 1143401232. Its totient is φ = 1143083172.

The previous prime is 1143242183. The next prime is 1143242207. The reversal of 1143242201 is 1022423411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1022423411 = 7669 ⋅133319.

It is a cyclic number.

It is not a de Polignac number, because 1143242201 - 2⁶ = 1143242137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143242207) 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, 68195 + ... + 83288.

It is an arithmetic number, because the mean of its divisors is an integer number (285850308).

Almost surely, 2^1143242201 is an apocalyptic number.

It is an amenable number.

1143242201 is a deficient number, since it is larger than the sum of its proper divisors (159031).

1143242201 is an equidigital number, since it uses as much as digits as its factorization.

1143242201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159030.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1143242201 is about 33811.8647962516. The cubic root of 1143242201 is about 1045.6333244196.

Adding to 1143242201 its reverse (1022423411), we get a palindrome (2165665612).

The spelling of 1143242201 in words is "one billion, one hundred forty-three million, two hundred forty-two thousand, two hundred one".