1141243456 has 56 divisors (see below), whose sum is σ = 2430886680. Its totient is φ = 529661952.

The previous prime is 1141243447. The next prime is 1141243457. The reversal of 1141243456 is 6543421411.

It can be written as a sum of positive squares in 4 ways, for example, as 392673856 + 748569600 = 19816^2 + 27360^2 .

It is not an unprimeable number, because it can be changed into a prime (1141243457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72240 + ... + 86608.

Almost surely, 2^1141243456 is an apocalyptic number.

1141243456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1141243456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1215443340).

1141243456 is an abundant number, since it is smaller than the sum of its proper divisors (1289643224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1141243456 is a wasteful number, since it uses less digits than its factorization.

1141243456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14471 (or 14461 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 1141243456 is about 33782.2950078884. The cubic root of 1141243456 is about 1045.0236042378.

Adding to 1141243456 its reverse (6543421411), we get a palindrome (7684664867).

The spelling of 1141243456 in words is "one billion, one hundred forty-one million, two hundred forty-three thousand, four hundred fifty-six".