1172129 has 12 divisors (see below), whose sum is σ = 1436400. Its totient is φ = 951048.

The previous prime is 1172111. The next prime is 1172147. The reversal of 1172129 is 9212711.

It is an interprime number because it is at equal distance from previous prime (1172111) and next prime (1172147).

It is not a de Polignac number, because 1172129 - 2¹⁶ = 1106593 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1172179) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 302 + ... + 1560.

It is an arithmetic number, because the mean of its divisors is an integer number (119700).

2^1172129 is an apocalyptic number.

1172129 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1172129 is a deficient number, since it is larger than the sum of its proper divisors (264271).

1172129 is a wasteful number, since it uses less digits than its factorization.

1172129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292 (or 1285 counting only the distinct ones).

The product of its digits is 252, while the sum is 23.

The square root of 1172129 is about 1082.6490659489. The cubic root of 1172129 is about 105.4366997466.

The spelling of 1172129 in words is "one million, one hundred seventy-two thousand, one hundred twenty-nine".