11905142 has 16 divisors (see below), whose sum is σ = 18240000. Its totient is φ = 5826600.

The previous prime is 11905139. The next prime is 11905171. The reversal of 11905142 is 24150911.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23609 + ... + 24107.

It is an arithmetic number, because the mean of its divisors is an integer number (1140000).

Almost surely, 2^11905142 is an apocalyptic number.

11905142 is a deficient number, since it is larger than the sum of its proper divisors (6334858).

11905142 is a wasteful number, since it uses less digits than its factorization.

11905142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 11905142 is about 3450.3828773051. The cubic root of 11905142 is about 228.3380002716.

The spelling of 11905142 in words is "eleven million, nine hundred five thousand, one hundred forty-two".