1185147 has 12 divisors (see below), whose sum is σ = 1758640. Its totient is φ = 768528.

The previous prime is 1185131. The next prime is 1185179. The reversal of 1185147 is 7415811.

It is not a de Polignac number, because 1185147 - 2⁴ = 1185131 is a prime.

It is an Ulam number.

It is a Duffinian number.

1185147 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1185147.

It is not an unprimeable number, because it can be changed into a prime (1185127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1447 + ... + 2112.

2^1185147 is an apocalyptic number.

1185147 is a deficient number, since it is larger than the sum of its proper divisors (573493).

1185147 is a wasteful number, since it uses less digits than its factorization.

1185147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3602 (or 3599 counting only the distinct ones).

The product of its digits is 1120, while the sum is 27.

The square root of 1185147 is about 1088.6445700962. The cubic root of 1185147 is about 105.8256002506.

It can be divided in two parts, 11 and 85147, that added together give a palindrome (85158).

The spelling of 1185147 in words is "one million, one hundred eighty-five thousand, one hundred forty-seven".