3042404120021 has 4 divisors (see below), whose sum is σ = 3477033280032. Its totient is φ = 2607774960012.

The previous prime is 3042404120009. The next prime is 3042404120047. The reversal of 3042404120021 is 1200214042403.

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 3042404120021 - 2⁶ = 3042404119957 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 (3042407120021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217314579995 + ... + 217314580008.

It is an arithmetic number, because the mean of its divisors is an integer number (869258320008).

Almost surely, 2^{3042404120021} is an apocalyptic number.

It is an amenable number.

3042404120021 is a deficient number, since it is larger than the sum of its proper divisors (434629160011).

3042404120021 is an equidigital number, since it uses as much as digits as its factorization.

3042404120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434629160010.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 3042404120021 its reverse (1200214042403), we get a palindrome (4242618162424).

The spelling of 3042404120021 in words is "three trillion, forty-two billion, four hundred four million, one hundred twenty thousand, twenty-one".