4140021455 has 32 divisors (see below), whose sum is σ = 5132574720. Its totient is φ = 3204622080.

The previous prime is 4140021439. The next prime is 4140021497. The reversal of 4140021455 is 5541200414.

It is not a de Polignac number, because 4140021455 - 2⁴ = 4140021439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5694302 + ... + 5695028.

It is an arithmetic number, because the mean of its divisors is an integer number (160392960).

Almost surely, 2^4140021455 is an apocalyptic number.

4140021455 is a deficient number, since it is larger than the sum of its proper divisors (992553265).

4140021455 is a wasteful number, since it uses less digits than its factorization.

4140021455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 4140021455 is about 64342.9984924545. The cubic root of 4140021455 is about 1605.7115474172.

Adding to 4140021455 its reverse (5541200414), we get a palindrome (9681221869).

The spelling of 4140021455 in words is "four billion, one hundred forty million, twenty-one thousand, four hundred fifty-five".