404012340333421 has 2 divisors, whose sum is σ = 404012340333422. Its totient is φ = 404012340333420.

The previous prime is 404012340333403. The next prime is 404012340333451. The reversal of 404012340333421 is 124333043210404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373072547187396 + 30939793146025 = 19315086^2 + 5562355^2 .

It is a cyclic number.

It is not a de Polignac number, because 404012340333421 - 2⁷ = 404012340333293 is a prime.

It is a super-2 number, since 2×404012340333421² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404012340333451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202006170166710 + 202006170166711.

It is an arithmetic number, because the mean of its divisors is an integer number (202006170166711).

Almost surely, 2^{404012340333421} is an apocalyptic number.

It is an amenable number.

404012340333421 is a deficient number, since it is larger than the sum of its proper divisors (1).

404012340333421 is an equidigital number, since it uses as much as digits as its factorization.

404012340333421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 404012340333421 its reverse (124333043210404), we get a palindrome (528345383543825).

The spelling of 404012340333421 in words is "four hundred four trillion, twelve billion, three hundred forty million, three hundred thirty-three thousand, four hundred twenty-one".