1155230120 has 32 divisors (see below), whose sum is σ = 2835565920. Its totient is φ = 420083520.

The previous prime is 1155230107. The next prime is 1155230123. The reversal of 1155230120 is 210325511.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1155230092 and 1155230101.

It is not an unprimeable number, because it can be changed into a prime (1155230123) 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, 1312322 + ... + 1313201.

It is an arithmetic number, because the mean of its divisors is an integer number (88611435).

Almost surely, 2^1155230120 is an apocalyptic number.

1155230120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155230120 is an abundant number, since it is smaller than the sum of its proper divisors (1680335800).

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

1155230120 is a wasteful number, since it uses less digits than its factorization.

1155230120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625545 (or 2625541 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1155230120 is about 33988.6763496315. The cubic root of 1155230120 is about 1049.2754245201.

Adding to 1155230120 its reverse (210325511), we get a palindrome (1365555631).

The spelling of 1155230120 in words is "one billion, one hundred fifty-five million, two hundred thirty thousand, one hundred twenty".