4320140021 has 8 divisors (see below), whose sum is σ = 4374477120. Its totient is φ = 4266041472.

The previous prime is 4320140009. The next prime is 4320140023. The reversal of 4320140021 is 1200410234.

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 4320140021 - 2²⁶ = 4253031157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4320140023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23051 + ... + 95768.

It is an arithmetic number, because the mean of its divisors is an integer number (546809640).

Almost surely, 2^4320140021 is an apocalyptic number.

It is an amenable number.

4320140021 is a deficient number, since it is larger than the sum of its proper divisors (54337099).

4320140021 is a wasteful number, since it uses less digits than its factorization.

4320140021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119275.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 4320140021 is about 65727.7720678253. The cubic root of 4320140021 is about 1628.6681658534.

Adding to 4320140021 its reverse (1200410234), we get a palindrome (5520550255).

The spelling of 4320140021 in words is "four billion, three hundred twenty million, one hundred forty thousand, twenty-one".