4040021255 has 8 divisors (see below), whose sum is σ = 4849787952. Its totient is φ = 3230842048.

The previous prime is 4040021207. The next prime is 4040021263. The reversal of 4040021255 is 5521200404.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4040021255 - 2¹² = 4040017159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4040021255.

It is a congruent number.

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, 131597 + ... + 159366.

It is an arithmetic number, because the mean of its divisors is an integer number (606223494).

Almost surely, 2^4040021255 is an apocalyptic number.

4040021255 is a deficient number, since it is larger than the sum of its proper divisors (809766697).

4040021255 is a wasteful number, since it uses less digits than its factorization.

4040021255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293745.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 4040021255 is about 63561.1615296637. The cubic root of 4040021255 is about 1592.6776414473.

Adding to 4040021255 its reverse (5521200404), we get a palindrome (9561221659).

The spelling of 4040021255 in words is "four billion, forty million, twenty-one thousand, two hundred fifty-five".