1172128 has 12 divisors (see below), whose sum is σ = 2307690. Its totient is φ = 586048.

The previous prime is 1172111. The next prime is 1172147. The reversal of 1172128 is 8212711.

It can be written as a sum of positive squares in only one way, i.e., 725904 + 446224 = 852^2 + 668^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1172099 and 1172108.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18283 + ... + 18346.

2^1172128 is an apocalyptic number.

It is an amenable number.

1172128 is a deficient number, since it is larger than the sum of its proper divisors (1135562).

1172128 is an equidigital number, since it uses as much as digits as its factorization.

1172128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36639 (or 36631 counting only the distinct ones).

The product of its digits is 224, while the sum is 22.

The square root of 1172128 is about 1082.6486041186. The cubic root of 1172128 is about 105.4366697622.

Adding to 1172128 its reverse (8212711), we get a palindrome (9384839).

The spelling of 1172128 in words is "one million, one hundred seventy-two thousand, one hundred twenty-eight".