1129197 has 4 divisors (see below), whose sum is σ = 1505600. Its totient is φ = 752796.

The previous prime is 1129187. The next prime is 1129211. The reversal of 1129197 is 7919211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1129197 - 2⁶ = 1129133 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188197 + ... + 188202.

It is an arithmetic number, because the mean of its divisors is an integer number (376400).

2^1129197 is an apocalyptic number.

It is an amenable number.

1129197 is a deficient number, since it is larger than the sum of its proper divisors (376403).

1129197 is an equidigital number, since it uses as much as digits as its factorization.

1129197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376402.

The product of its digits is 1134, while the sum is 30.

The square root of 1129197 is about 1062.6368147208. The cubic root of 1129197 is about 104.1333656396.

It can be divided in two parts, 1129 and 197, that added together give a triangular number (1326 = T₅₁).

The spelling of 1129197 in words is "one million, one hundred twenty-nine thousand, one hundred ninety-seven".