1172120 has 16 divisors (see below), whose sum is σ = 2637360. Its totient is φ = 468832.

The previous prime is 1172111. The next prime is 1172147. The reversal of 1172120 is 212711.

It is a junction number, because it is equal to n+sod(n) for n = 1172095 and 1172104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14612 + ... + 14691.

It is an arithmetic number, because the mean of its divisors is an integer number (164835).

2^1172120 is an apocalyptic number.

1172120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1172120 is an abundant number, since it is smaller than the sum of its proper divisors (1465240).

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

1172120 is a wasteful number, since it uses less digits than its factorization.

1172120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29314 (or 29310 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 1172120 is about 1082.6449094694. The cubic root of 1172120 is about 105.4364298864.

Adding to 1172120 its reverse (212711), we get a palindrome (1384831).

The spelling of 1172120 in words is "one million, one hundred seventy-two thousand, one hundred twenty".