11642147 has 4 divisors (see below), whose sum is σ = 12700536. Its totient is φ = 10583760.

The previous prime is 11642107. The next prime is 11642159. The reversal of 11642147 is 74124611.

11642147 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11642147 - 2¹⁴ = 11625763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11642107) 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 3 ways as a sum of consecutive naturals, for example, 529178 + ... + 529199.

It is an arithmetic number, because the mean of its divisors is an integer number (3175134).

Almost surely, 2^11642147 is an apocalyptic number.

11642147 is a deficient number, since it is larger than the sum of its proper divisors (1058389).

11642147 is a wasteful number, since it uses less digits than its factorization.

11642147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058388.

The product of its digits is 1344, while the sum is 26.

The square root of 11642147 is about 3412.0590557609. The cubic root of 11642147 is about 226.6440694985.

Adding to 11642147 its reverse (74124611), we get a palindrome (85766758).

The spelling of 11642147 in words is "eleven million, six hundred forty-two thousand, one hundred forty-seven".