1241253143 has 4 divisors (see below), whose sum is σ = 1336734168. Its totient is φ = 1145772120.

The previous prime is 1241253137. The next prime is 1241253161. The reversal of 1241253143 is 3413521421.

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: 3413521421 = 7109 ⋅480169.

It is a cyclic number.

It is not a de Polignac number, because 1241253143 - 2¹⁸ = 1240990999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241253043) 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, 47740493 + ... + 47740518.

It is an arithmetic number, because the mean of its divisors is an integer number (334183542).

Almost surely, 2^1241253143 is an apocalyptic number.

1241253143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1241253143 is a deficient number, since it is larger than the sum of its proper divisors (95481025).

1241253143 is an equidigital number, since it uses as much as digits as its factorization.

1241253143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95481024.

The product of its digits is 2880, while the sum is 26.

The square root of 1241253143 is about 35231.4226650018. The cubic root of 1241253143 is about 1074.6988572019.

Adding to 1241253143 its reverse (3413521421), we get a palindrome (4654774564).

The spelling of 1241253143 in words is "one billion, two hundred forty-one million, two hundred fifty-three thousand, one hundred forty-three".