1155332120 has 32 divisors (see below), whose sum is σ = 2603268720. Its totient is φ = 461462400.

The previous prime is 1155332119. The next prime is 1155332137. The reversal of 1155332120 is 212335511.

It is a happy number.

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, 7439 + ... + 48641.

Almost surely, 2^1155332120 is an apocalyptic number.

1155332120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155332120 is an abundant number, since it is smaller than the sum of its proper divisors (1447936600).

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

1155332120 is a wasteful number, since it uses less digits than its factorization.

1155332120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41915 (or 41911 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1155332120 is about 33990.1768162509. The cubic root of 1155332120 is about 1049.3063052198.

Adding to 1155332120 its reverse (212335511), we get a palindrome (1367667631).

The spelling of 1155332120 in words is "one billion, one hundred fifty-five million, three hundred thirty-two thousand, one hundred twenty".