4020442340 has 24 divisors (see below), whose sum is σ = 8444180472. Its totient is φ = 1607938560.

The previous prime is 4020442331. The next prime is 4020442367. The reversal of 4020442340 is 432440204.

It can be written as a sum of positive squares in 4 ways, for example, as 797836516 + 3222605824 = 28246^2 + 56768^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196682 + ... + 216158.

It is an arithmetic number, because the mean of its divisors is an integer number (351840853).

Almost surely, 2^4020442340 is an apocalyptic number.

It is an amenable number.

4020442340 is an abundant number, since it is smaller than the sum of its proper divisors (4423738132).

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

4020442340 is a wasteful number, since it uses less digits than its factorization.

4020442340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29807 (or 29805 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 4020442340 is about 63406.9581355233. The cubic root of 4020442340 is about 1590.1006410197.

Adding to 4020442340 its reverse (432440204), we get a palindrome (4452882544).

The spelling of 4020442340 in words is "four billion, twenty million, four hundred forty-two thousand, three hundred forty".