6434642 has 4 divisors (see below), whose sum is σ = 9651966. Its totient is φ = 3217320.

The previous prime is 6434627. The next prime is 6434647. The reversal of 6434642 is 2464346.

It is a happy number.

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., 4363921 + 2070721 = 2089^2 + 1439^2 .

It is not an unprimeable number, because it can be changed into a prime (6434647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608659 + ... + 1608662.

Almost surely, 2^6434642 is an apocalyptic number.

6434642 is a deficient number, since it is larger than the sum of its proper divisors (3217324).

6434642 is a wasteful number, since it uses less digits than its factorization.

6434642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217323.

The product of its digits is 13824, while the sum is 29.

The square root of 6434642 is about 2536.6596145325. The cubic root of 6434642 is about 185.9979380817.

Adding to 6434642 its reverse (2464346), we get a palindrome (8898988).

The spelling of 6434642 in words is "six million, four hundred thirty-four thousand, six hundred forty-two".