11671142 has 16 divisors (see below), whose sum is σ = 20496672. Its totient is φ = 4879680.

The previous prime is 11671123. The next prime is 11671147. The reversal of 11671142 is 24117611.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11671147) 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 7 ways as a sum of consecutive naturals, for example, 9593 + ... + 10740.

It is an arithmetic number, because the mean of its divisors is an integer number (1281042).

Almost surely, 2^11671142 is an apocalyptic number.

11671142 is a deficient number, since it is larger than the sum of its proper divisors (8825530).

11671142 is a wasteful number, since it uses less digits than its factorization.

11671142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20383.

The product of its digits is 336, while the sum is 23.

The square root of 11671142 is about 3416.3053142247. The cubic root of 11671142 is about 226.8320673770.

Adding to 11671142 its reverse (24117611), we get a palindrome (35788753).

The spelling of 11671142 in words is "eleven million, six hundred seventy-one thousand, one hundred forty-two".