6404043142 has 12 divisors (see below), whose sum is σ = 11174401980. Its totient is φ = 2744589876.

The previous prime is 6404043137. The next prime is 6404043169. The reversal of 6404043142 is 2413404046.

It is a self number, because there is not a number n which added to its sum of digits gives 6404043142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32673592 + ... + 32673787.

It is an arithmetic number, because the mean of its divisors is an integer number (931200165).

Almost surely, 2^6404043142 is an apocalyptic number.

6404043142 is a deficient number, since it is larger than the sum of its proper divisors (4770358838).

6404043142 is a wasteful number, since it uses less digits than its factorization.

6404043142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65347395 (or 65347388 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 6404043142 is about 80025.2656477940. The cubic root of 6404043142 is about 1857.0264220341.

Adding to 6404043142 its reverse (2413404046), we get a palindrome (8817447188).

The spelling of 6404043142 in words is "six billion, four hundred four million, forty-three thousand, one hundred forty-two".