11421142 has 16 divisors (see below), whose sum is σ = 17523792. Its totient is φ = 5581440.

The previous prime is 11421121. The next prime is 11421143. The reversal of 11421142 is 24112411.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421143) by changing a digit.

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, 19717 + ... + 20287.

It is an arithmetic number, because the mean of its divisors is an integer number (1095237).

Almost surely, 2^11421142 is an apocalyptic number.

11421142 is a deficient number, since it is larger than the sum of its proper divisors (6102650).

11421142 is a wasteful number, since it uses less digits than its factorization.

11421142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783.

The product of its digits is 64, while the sum is 16.

The square root of 11421142 is about 3379.5180129717. The cubic root of 11421142 is about 225.2007558022.

Adding to 11421142 its reverse (24112411), we get a palindrome (35533553).

The spelling of 11421142 in words is "eleven million, four hundred twenty-one thousand, one hundred forty-two".