13811042 has 12 divisors (see below), whose sum is σ = 24099030. Its totient is φ = 5918976.

The previous prime is 13811029. The next prime is 13811051. The reversal of 13811042 is 24011831.

It can be written as a sum of positive squares in only one way, i.e., 11909401 + 1901641 = 3451^2 + 1379^2 .

It is a super-2 number, since 2×13811042² = 381489762251528, which contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 70367 + ... + 70562.

Almost surely, 2^13811042 is an apocalyptic number.

13811042 is a deficient number, since it is larger than the sum of its proper divisors (10287988).

13811042 is a wasteful number, since it uses less digits than its factorization.

13811042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140945 (or 140938 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 13811042 is about 3716.3210302664. The cubic root of 13811042 is about 239.9249881316.

Adding to 13811042 its reverse (24011831), we get a palindrome (37822873).

The spelling of 13811042 in words is "thirteen million, eight hundred eleven thousand, forty-two".