404012430301021 has 4 divisors (see below), whose sum is σ = 404013559856992. Its totient is φ = 404011300745052.

The previous prime is 404012430301001. The next prime is 404012430301201. The reversal of 404012430301021 is 120103034210404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 404012430301021 - 2⁵ = 404012430300989 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 (404012430301001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564241305 + ... + 564956878.

It is an arithmetic number, because the mean of its divisors is an integer number (101003389964248).

Almost surely, 2^{404012430301021} is an apocalyptic number.

It is an amenable number.

404012430301021 is a deficient number, since it is larger than the sum of its proper divisors (1129555971).

404012430301021 is a wasteful number, since it uses less digits than its factorization.

404012430301021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129555970.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 404012430301021 its reverse (120103034210404), we get a palindrome (524115464511425).

The spelling of 404012430301021 in words is "four hundred four trillion, twelve billion, four hundred thirty million, three hundred one thousand, twenty-one".