420242055305 has 4 divisors (see below), whose sum is σ = 504290466372. Its totient is φ = 336193644240.

The previous prime is 420242055301. The next prime is 420242055421. The reversal of 420242055305 is 503550242024.

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 210402020416 + 209840034889 = 458696^2 + 458083^2 .

It is not a de Polignac number, because 420242055305 - 2² = 420242055301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420242055301) 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, 42024205526 + ... + 42024205535.

It is an arithmetic number, because the mean of its divisors is an integer number (126072616593).

Almost surely, 2^420242055305 is an apocalyptic number.

It is an amenable number.

420242055305 is a deficient number, since it is larger than the sum of its proper divisors (84048411067).

420242055305 is an equidigital number, since it uses as much as digits as its factorization.

420242055305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84048411066.

The product of its (nonzero) digits is 48000, while the sum is 32.

Adding to 420242055305 its reverse (503550242024), we get a palindrome (923792297329).

The spelling of 420242055305 in words is "four hundred twenty billion, two hundred forty-two million, fifty-five thousand, three hundred five".