1404304224021 has 6 divisors (see below), whose sum is σ = 2028439434710. Its totient is φ = 936202816008.

The previous prime is 1404304224007. The next prime is 1404304224041. The reversal of 1404304224021 is 1204224034041.

1404304224021 is a `hidden beast` number, since 1 + 4 + 0 + 430 + 4 + 224 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1280776577796 + 123527646225 = 1131714^2 + 351465^2 .

It is not a de Polignac number, because 1404304224021 - 2¹¹ = 1404304221973 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 (1404304224041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78016901326 + ... + 78016901343.

Almost surely, 2^{1404304224021} is an apocalyptic number.

It is an amenable number.

1404304224021 is a deficient number, since it is larger than the sum of its proper divisors (624135210689).

1404304224021 is a wasteful number, since it uses less digits than its factorization.

1404304224021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156033802675 (or 156033802672 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 1404304224021 its reverse (1204224034041), we get a palindrome (2608528258062).

The spelling of 1404304224021 in words is "one trillion, four hundred four billion, three hundred four million, two hundred twenty-four thousand, twenty-one".