1155124040 has 48 divisors (see below), whose sum is σ = 3023365500. Its totient is φ = 396041856.

The previous prime is 1155124001. The next prime is 1155124043. The reversal of 1155124040 is 404215511.

It can be written as a sum of positive squares in 2 ways, for example, as 1028741476 + 126382564 = 32074^2 + 11242^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1155123997 and 1155124015.

It is not an unprimeable number, because it can be changed into a prime (1155124043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 292715 + ... + 296634.

Almost surely, 2^1155124040 is an apocalyptic number.

1155124040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155124040 is an abundant number, since it is smaller than the sum of its proper divisors (1868241460).

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

1155124040 is a wasteful number, since it uses less digits than its factorization.

1155124040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589374 (or 589363 counting only the distinct ones).

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

The square root of 1155124040 is about 33987.1157940770. The cubic root of 1155124040 is about 1049.2433066640.

Adding to 1155124040 its reverse (404215511), we get a palindrome (1559339551).

The spelling of 1155124040 in words is "one billion, one hundred fifty-five million, one hundred twenty-four thousand, forty".