4002442440 has 64 divisors (see below), whose sum is σ = 12331863360. Its totient is φ = 1038470400.

The previous prime is 4002442439. The next prime is 4002442441. The reversal of 4002442440 is 442442004.

It is an interprime number because it is at equal distance from previous prime (4002442439) and next prime (4002442441).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 4002442440.

It is not an unprimeable number, because it can be changed into a prime (4002442441) 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, 446286 + ... + 455165.

It is an arithmetic number, because the mean of its divisors is an integer number (192685365).

Almost surely, 2^4002442440 is an apocalyptic number.

4002442440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4002442440 is an abundant number, since it is smaller than the sum of its proper divisors (8329420920).

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

4002442440 is a wasteful number, since it uses less digits than its factorization.

4002442440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901502 (or 901498 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 4002442440 is about 63264.8594402928. The cubic root of 4002442440 is about 1587.7240805477.

Adding to 4002442440 its reverse (442442004), we get a palindrome (4444884444).

The spelling of 4002442440 in words is "four billion, two million, four hundred forty-two thousand, four hundred forty".