6398242 has 4 divisors (see below), whose sum is σ = 9597366. Its totient is φ = 3199120.

The previous prime is 6398237. The next prime is 6398243. The reversal of 6398242 is 2428936.

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., 6395841 + 2401 = 2529^2 + 49^2 .

It is an Ulam number.

It is a d-powerful number, because it can be written as 6⁸ + 3² + 9 + 8 + 2³ + 4¹¹ + 2¹⁹ .

It is a junction number, because it is equal to n+sod(n) for n = 6398198 and 6398207.

It is not an unprimeable number, because it can be changed into a prime (6398243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1599559 + ... + 1599562.

Almost surely, 2^6398242 is an apocalyptic number.

6398242 is a deficient number, since it is larger than the sum of its proper divisors (3199124).

6398242 is a wasteful number, since it uses less digits than its factorization.

6398242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199123.

The product of its digits is 20736, while the sum is 34.

The square root of 6398242 is about 2529.4746490131. The cubic root of 6398242 is about 185.6465519686.

The spelling of 6398242 in words is "six million, three hundred ninety-eight thousand, two hundred forty-two".