12042838 has 16 divisors (see below), whose sum is σ = 18594576. Its totient is φ = 5846400.

The previous prime is 12042809. The next prime is 12042847. The reversal of 12042838 is 83824021.

12042838 is a modest number, since divided by 2838 gives 1204 as remainder.

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, 19738 + ... + 20338.

It is an arithmetic number, because the mean of its divisors is an integer number (1162161).

Almost surely, 2^12042838 is an apocalyptic number.

12042838 is a deficient number, since it is larger than the sum of its proper divisors (6551738).

12042838 is a wasteful number, since it uses less digits than its factorization.

12042838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 12042838 is about 3470.2792394849. The cubic root of 12042838 is about 229.2149542470.

Adding to 12042838 its reverse (83824021), we get a palindrome (95866859).

It can be divided in two parts, 12042 and 838, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 12042838 in words is "twelve million, forty-two thousand, eight hundred thirty-eight".