420005221234 has 8 divisors (see below), whose sum is σ = 630722939868. Its totient is φ = 209764241280.

The previous prime is 420005221231. The next prime is 420005221247. The reversal of 420005221234 is 432122500024.

It can be written as a sum of positive squares in 2 ways, for example, as 415641958209 + 4363263025 = 644703^2 + 66055^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 420005221199 and 420005221208.

It is not an unprimeable number, because it can be changed into a prime (420005221231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119182467 + ... + 119185990.

Almost surely, 2^420005221234 is an apocalyptic number.

420005221234 is a deficient number, since it is larger than the sum of its proper divisors (210717718634).

420005221234 is a wasteful number, since it uses less digits than its factorization.

420005221234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238369340.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 420005221234 its reverse (432122500024), we get a palindrome (852127721258).

The spelling of 420005221234 in words is "four hundred twenty billion, five million, two hundred twenty-one thousand, two hundred thirty-four".