4042452440 has 128 divisors (see below), whose sum is σ = 10405221120. Its totient is φ = 1400217600.

The previous prime is 4042452413. The next prime is 4042452443. The reversal of 4042452440 is 442542404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042452443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3809510 + ... + 3810570.

It is an arithmetic number, because the mean of its divisors is an integer number (81290790).

Almost surely, 2^4042452440 is an apocalyptic number.

4042452440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4042452440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5202610560).

4042452440 is an abundant number, since it is smaller than the sum of its proper divisors (6362768680).

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

4042452440 is a wasteful number, since it uses less digits than its factorization.

4042452440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533 (or 1529 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 29.

The square root of 4042452440 is about 63580.2834218282. The cubic root of 4042452440 is about 1592.9970554056.

Adding to 4042452440 its reverse (442542404), we get a palindrome (4484994844).

The spelling of 4042452440 in words is "four billion, forty-two million, four hundred fifty-two thousand, four hundred forty".