1156241203 has 4 divisors (see below), whose sum is σ = 1245182848. Its totient is φ = 1067299560.

The previous prime is 1156241197. The next prime is 1156241237. The reversal of 1156241203 is 3021426511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3021426511 = 1097 ⋅2754263.

It is a cyclic number.

It is not a de Polignac number, because 1156241203 - 2²⁵ = 1122686771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1156241243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44470803 + ... + 44470828.

It is an arithmetic number, because the mean of its divisors is an integer number (311295712).

Almost surely, 2^1156241203 is an apocalyptic number.

1156241203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1156241203 is a deficient number, since it is larger than the sum of its proper divisors (88941645).

1156241203 is an equidigital number, since it uses as much as digits as its factorization.

1156241203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88941644.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1156241203 is about 34003.5469179320. The cubic root of 1156241203 is about 1049.5814516244.

Adding to 1156241203 its reverse (3021426511), we get a palindrome (4177667714).

The spelling of 1156241203 in words is "one billion, one hundred fifty-six million, two hundred forty-one thousand, two hundred three".