1173120 has 128 divisors (see below), whose sum is σ = 4112640. Its totient is φ = 282624.

The previous prime is 1173101. The next prime is 1173121. The reversal of 1173120 is 213711.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a zygodrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 1173120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1173121) 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, 24937 + ... + 24983.

It is an arithmetic number, because the mean of its divisors is an integer number (32130).

2^1173120 is an apocalyptic number.

1173120 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 1173120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2056320).

1173120 is an abundant number, since it is smaller than the sum of its proper divisors (2939520).

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

1173120 is a wasteful number, since it uses less digits than its factorization.

1173120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 1173120 is about 1083.1066429489. The cubic root of 1173120 is about 105.4664059013.

Adding to 1173120 its reverse (213711), we get a palindrome (1386831).

The spelling of 1173120 in words is "one million, one hundred seventy-three thousand, one hundred twenty".