6401042 has 6 divisors (see below), whose sum is σ = 9606933. Its totient is φ = 3198732.

The previous prime is 6401033. The next prime is 6401069. The reversal of 6401042 is 2401046.

It can be written as a sum of positive squares in 2 ways, for example, as 4661281 + 1739761 = 2159^2 + 1319^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1789.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6401042.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2684 + ... + 4472.

Almost surely, 2^6401042 is an apocalyptic number.

6401042 is a deficient number, since it is larger than the sum of its proper divisors (3205891).

6401042 is an frugal number, since it uses more digits than its factorization.

6401042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3580 (or 1791 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 6401042 is about 2530.0280630855. The cubic root of 6401042 is about 185.6736289135.

Adding to 6401042 its reverse (2401046), we get a palindrome (8802088).

The spelling of 6401042 in words is "six million, four hundred one thousand, forty-two".