1141540520 has 64 divisors (see below), whose sum is σ = 2738016000. Its totient is φ = 427085568.

The previous prime is 1141540487. The next prime is 1141540529. The reversal of 1141540520 is 250451411.

It is a super-2 number, since 2×1141540520² = 2606229517603740800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1141540529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50534 + ... + 69546.

It is an arithmetic number, because the mean of its divisors is an integer number (42781500).

Almost surely, 2^1141540520 is an apocalyptic number.

1141540520 is a gapful number since it is divisible by the number (10) 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 1141540520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1369008000).

1141540520 is an abundant number, since it is smaller than the sum of its proper divisors (1596475480).

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

1141540520 is a wasteful number, since it uses less digits than its factorization.

1141540520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19122 (or 19118 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1141540520 is about 33786.6914627639. The cubic root of 1141540520 is about 1045.1142690761.

Adding to 1141540520 its reverse (250451411), we get a palindrome (1391991931).

The spelling of 1141540520 in words is "one billion, one hundred forty-one million, five hundred forty thousand, five hundred twenty".