305442054346421 has 4 divisors (see below), whose sum is σ = 305443481933100. Its totient is φ = 305440626759744.

The previous prime is 305442054346417. The next prime is 305442054346441. The reversal of 305442054346421 is 124643450244503.

It is a happy number.

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 148564675841521 + 156877378504900 = 12188711^2 + 12525070^2 .

It is a cyclic number.

It is not a de Polignac number, because 305442054346421 - 2² = 305442054346417 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 (305442054346441) 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, 713472356 + ... + 713900333.

It is an arithmetic number, because the mean of its divisors is an integer number (76360870483275).

Almost surely, 2^{305442054346421} is an apocalyptic number.

It is an amenable number.

305442054346421 is a deficient number, since it is larger than the sum of its proper divisors (1427586679).

305442054346421 is a wasteful number, since it uses less digits than its factorization.

305442054346421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427586678.

The product of its (nonzero) digits is 5529600, while the sum is 47.

The spelling of 305442054346421 in words is "three hundred five trillion, four hundred forty-two billion, fifty-four million, three hundred forty-six thousand, four hundred twenty-one".