1129147 has 4 divisors (see below), whose sum is σ = 1143520. Its totient is φ = 1114776.

The previous prime is 1129133. The next prime is 1129153. The reversal of 1129147 is 7419211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7419211 = 863 ⋅8597.

It is a cyclic number.

It is not a de Polignac number, because 1129147 - 2⁷ = 1129019 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

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, 7068 + ... + 7225.

It is an arithmetic number, because the mean of its divisors is an integer number (285880).

2^1129147 is an apocalyptic number.

1129147 is the 614-th hex number.

1129147 is a deficient number, since it is larger than the sum of its proper divisors (14373).

1129147 is an equidigital number, since it uses as much as digits as its factorization.

1129147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14372.

The product of its digits is 504, while the sum is 25.

The square root of 1129147 is about 1062.6132880780. The cubic root of 1129147 is about 104.1318286343.

Subtracting 1129147 from its reverse (7419211), we obtain a square (6290064 = 2508²).

The spelling of 1129147 in words is "one million, one hundred twenty-nine thousand, one hundred forty-seven".