6397442 has 4 divisors (see below), whose sum is σ = 9596166. Its totient is φ = 3198720.

The previous prime is 6397421. The next prime is 6397451. The reversal of 6397442 is 2447936.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4239481 + 2157961 = 2059^2 + 1469^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1599359 + ... + 1599362.

Almost surely, 2^6397442 is an apocalyptic number.

6397442 is a deficient number, since it is larger than the sum of its proper divisors (3198724).

6397442 is a wasteful number, since it uses less digits than its factorization.

6397442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3198723.

The product of its digits is 36288, while the sum is 35.

The square root of 6397442 is about 2529.3165084663. The cubic root of 6397442 is about 185.6388142478.

The spelling of 6397442 in words is "six million, three hundred ninety-seven thousand, four hundred forty-two".