4042012 has 12 divisors (see below), whose sum is σ = 7617736. Its totient is φ = 1865520.

The previous prime is 4042001. The next prime is 4042019. The reversal of 4042012 is 2102404.

It is a super-2 number, since 2×4042012² = 32675722016288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 4041983 and 4042001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042019) 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 3 ways as a sum of consecutive naturals, for example, 38814 + ... + 38917.

Almost surely, 2^4042012 is an apocalyptic number.

It is an amenable number.

4042012 is a deficient number, since it is larger than the sum of its proper divisors (3575724).

4042012 is a wasteful number, since it uses less digits than its factorization.

4042012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77748 (or 77746 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 4042012 is about 2010.4755656312. The cubic root of 4042012 is about 159.2939199016.

Adding to 4042012 its reverse (2102404), we get a palindrome (6144416).

The spelling of 4042012 in words is "four million, forty-two thousand, twelve".