6449974242 has 32 divisors (see below), whose sum is σ = 12976552512. Its totient is φ = 2137243584.

The previous prime is 6449974241. The next prime is 6449974313. The reversal of 6449974242 is 2424799446.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6449974241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2602708 + ... + 2605184.

It is an arithmetic number, because the mean of its divisors is an integer number (405517266).

Almost surely, 2^6449974242 is an apocalyptic number.

6449974242 is an abundant number, since it is smaller than the sum of its proper divisors (6526578270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6449974242 is a wasteful number, since it uses less digits than its factorization.

6449974242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4882.

The product of its digits is 3483648, while the sum is 51.

The square root of 6449974242 is about 80311.7316585815. The cubic root of 6449974242 is about 1861.4555071569.

The spelling of 6449974242 in words is "six billion, four hundred forty-nine million, nine hundred seventy-four thousand, two hundred forty-two".