2642440004 has 6 divisors (see below), whose sum is σ = 4624270014. Its totient is φ = 1321220000.

The previous prime is 2642439977. The next prime is 2642440019. The reversal of 2642440004 is 4000442462.

It can be written as a sum of positive squares in only one way, i.e., 2153145604 + 489294400 = 46402^2 + 22120^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330304997 + ... + 330305004.

It is an arithmetic number, because the mean of its divisors is an integer number (770711669).

Almost surely, 2^2642440004 is an apocalyptic number.

It is an amenable number.

2642440004 is a deficient number, since it is larger than the sum of its proper divisors (1981830010).

2642440004 is a wasteful number, since it uses less digits than its factorization.

2642440004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660610005 (or 660610003 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 2642440004 is about 51404.6690875450. The cubic root of 2642440004 is about 1382.5103093428.

Adding to 2642440004 its reverse (4000442462), we get a palindrome (6642882466).

The spelling of 2642440004 in words is "two billion, six hundred forty-two million, four hundred forty thousand, four".