1241154143 has 4 divisors (see below), whose sum is σ = 1244482008. Its totient is φ = 1237826280.

The previous prime is 1241154133. The next prime is 1241154169. The reversal of 1241154143 is 3414511421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3414511421 = 17 ⋅200853613.

It is a cyclic number.

It is not a de Polignac number, because 1241154143 - 2⁸ = 1241153887 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 (1241154113) 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, 1663373 + ... + 1664118.

It is an arithmetic number, because the mean of its divisors is an integer number (311120502).

Almost surely, 2^1241154143 is an apocalyptic number.

1241154143 is a deficient number, since it is larger than the sum of its proper divisors (3327865).

1241154143 is an equidigital number, since it uses as much as digits as its factorization.

1241154143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3327864.

The product of its digits is 1920, while the sum is 26.

The square root of 1241154143 is about 35230.0176412105. The cubic root of 1241154143 is about 1074.6702844604.

Adding to 1241154143 its reverse (3414511421), we get a palindrome (4655665564).

The spelling of 1241154143 in words is "one billion, two hundred forty-one million, one hundred fifty-four thousand, one hundred forty-three".