6421142 has 16 divisors (see below), whose sum is σ = 11854752. Its totient is φ = 2540160.

The previous prime is 6421141. The next prime is 6421157. The reversal of 6421142 is 2411246.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6421141) 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 7 ways as a sum of consecutive naturals, for example, 17459 + ... + 17822.

It is an arithmetic number, because the mean of its divisors is an integer number (740922).

Almost surely, 2^6421142 is an apocalyptic number.

6421142 is a deficient number, since it is larger than the sum of its proper divisors (5433610).

6421142 is a wasteful number, since it uses less digits than its factorization.

6421142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35303.

The product of its digits is 384, while the sum is 20.

The square root of 6421142 is about 2533.9972375676. The cubic root of 6421142 is about 185.8677712838.

Adding to 6421142 its reverse (2411246), we get a palindrome (8832388).

The spelling of 6421142 in words is "six million, four hundred twenty-one thousand, one hundred forty-two".