330140021 has 16 divisors (see below), whose sum is σ = 343699200. Its totient is φ = 316924608.

The previous prime is 330140003. The next prime is 330140081. The reversal of 330140021 is 120041033.

It is a cyclic number.

It is not a de Polignac number, because 330140021 - 2²² = 325945717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 330139978 and 330140005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330140081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 848495 + ... + 848883.

It is an arithmetic number, because the mean of its divisors is an integer number (21481200).

Almost surely, 2^330140021 is an apocalyptic number.

It is an amenable number.

330140021 is a deficient number, since it is larger than the sum of its proper divisors (13559179).

330140021 is a wasteful number, since it uses less digits than its factorization.

330140021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 330140021 is about 18169.7556670419. The cubic root of 330140021 is about 691.1400469961.

Adding to 330140021 its reverse (120041033), we get a palindrome (450181054).

The spelling of 330140021 in words is "three hundred thirty million, one hundred forty thousand, twenty-one".