4021333540 has 24 divisors (see below), whose sum is σ = 9651200832. Its totient is φ = 1378742880.

The previous prime is 4021333529. The next prime is 4021333573. The reversal of 4021333540 is 453331204.

It is a super-2 number, since 2×4021333540² = 32342246879857863200, which contains 22 as substring.

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, 14361766 + ... + 14362045.

It is an arithmetic number, because the mean of its divisors is an integer number (402133368).

Almost surely, 2^4021333540 is an apocalyptic number.

It is an amenable number.

4021333540 is an abundant number, since it is smaller than the sum of its proper divisors (5629867292).

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

4021333540 is a wasteful number, since it uses less digits than its factorization.

4021333540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28723827 (or 28723825 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 4021333540 is about 63413.9853660058. The cubic root of 4021333540 is about 1590.2181233658.

Adding to 4021333540 its reverse (453331204), we get a palindrome (4474664744).

It can be divided in two parts, 4021 and 333540, that added together give a square (337561 = 581²).

The spelling of 4021333540 in words is "four billion, twenty-one million, three hundred thirty-three thousand, five hundred forty".