1141243540 has 24 divisors (see below), whose sum is σ = 2461386312. Its totient is φ = 444159360.

The previous prime is 1141243513. The next prime is 1141243561. The reversal of 1141243540 is 453421411.

It can be written as a sum of positive squares in 4 ways, for example, as 92390544 + 1048852996 = 9612^2 + 32386^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770371 + ... + 771850.

It is an arithmetic number, because the mean of its divisors is an integer number (102557763).

Almost surely, 2^1141243540 is an apocalyptic number.

1141243540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1141243540 is an abundant number, since it is smaller than the sum of its proper divisors (1320142772).

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

1141243540 is a wasteful number, since it uses less digits than its factorization.

1141243540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542267 (or 1542265 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1141243540 is about 33782.2962511431. The cubic root of 1141243540 is about 1045.0236298771.

Adding to 1141243540 its reverse (453421411), we get a palindrome (1594664951).

The spelling of 1141243540 in words is "one billion, one hundred forty-one million, two hundred forty-three thousand, five hundred forty".