4242439844 has 6 divisors (see below), whose sum is σ = 7424269734. Its totient is φ = 2121219920.

The previous prime is 4242439843. The next prime is 4242439849. The reversal of 4242439844 is 4489342424.

It can be written as a sum of positive squares in only one way, i.e., 3713439844 + 529000000 = 60938^2 + 23000^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4242439795 and 4242439804.

It is not an unprimeable number, because it can be changed into a prime (4242439843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530304977 + ... + 530304984.

It is an arithmetic number, because the mean of its divisors is an integer number (1237378289).

Almost surely, 2^4242439844 is an apocalyptic number.

It is an amenable number.

4242439844 is a deficient number, since it is larger than the sum of its proper divisors (3181829890).

4242439844 is a wasteful number, since it uses less digits than its factorization.

4242439844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060609965 (or 1060609963 counting only the distinct ones).

The product of its digits is 884736, while the sum is 44.

The square root of 4242439844 is about 65134.0144931970. The cubic root of 4242439844 is about 1618.8448611264.

The spelling of 4242439844 in words is "four billion, two hundred forty-two million, four hundred thirty-nine thousand, eight hundred forty-four".