1165120 has 56 divisors (see below), whose sum is σ = 3035808. Its totient is φ = 422400.

The previous prime is 1165103. The next prime is 1165121. The reversal of 1165120 is 215611.

It is a happy number.

It is a super-2 number, since 2×1165120² = 2715009228800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (16) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1165094 and 1165103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165121) 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, 3355 + ... + 3685.

2^1165120 is an apocalyptic number.

1165120 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 1165120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1517904).

1165120 is an abundant number, since it is smaller than the sum of its proper divisors (1870688).

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

1165120 is a wasteful number, since it uses less digits than its factorization.

1165120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1165120 is about 1079.4072447413. The cubic root of 1165120 is about 105.2261188984.

The spelling of 1165120 in words is "one million, one hundred sixty-five thousand, one hundred twenty".