1147145 has 8 divisors (see below), whose sum is σ = 1382856. Its totient is φ = 913536.

The previous prime is 1147141. The next prime is 1147169. The reversal of 1147145 is 5417411.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 92416 + 1054729 = 304^2 + 1027^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1147145 - 2² = 1147141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1147145.

It is not an unprimeable number, because it can be changed into a prime (1147141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1199 + ... + 1931.

It is an arithmetic number, because the mean of its divisors is an integer number (172857).

2^1147145 is an apocalyptic number.

It is an amenable number.

1147145 is a deficient number, since it is larger than the sum of its proper divisors (235711).

1147145 is an equidigital number, since it uses as much as digits as its factorization.

1147145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051.

The product of its digits is 560, while the sum is 23.

The square root of 1147145 is about 1071.0485516539. The cubic root of 1147145 is about 104.6821833641.

The spelling of 1147145 in words is "one million, one hundred forty-seven thousand, one hundred forty-five".