330404130421 has 4 divisors (see below), whose sum is σ = 330406483212. Its totient is φ = 330401777632.

The previous prime is 330404130403. The next prime is 330404130457. The reversal of 330404130421 is 124031404033.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 170640043396 + 159764087025 = 413086^2 + 399705^2 .

It is a cyclic number.

It is not a de Polignac number, because 330404130421 - 2¹⁷ = 330403999349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330404130401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 951406 + ... + 1251391.

It is an arithmetic number, because the mean of its divisors is an integer number (82601620803).

Almost surely, 2^330404130421 is an apocalyptic number.

It is an amenable number.

330404130421 is a deficient number, since it is larger than the sum of its proper divisors (2352791).

330404130421 is a wasteful number, since it uses less digits than its factorization.

330404130421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352790.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 330404130421 its reverse (124031404033), we get a palindrome (454435534454).

The spelling of 330404130421 in words is "three hundred thirty billion, four hundred four million, one hundred thirty thousand, four hundred twenty-one".