420234421333 has 2 divisors, whose sum is σ = 420234421334. Its totient is φ = 420234421332.

The previous prime is 420234421309. The next prime is 420234421463. The reversal of 420234421333 is 333124432024.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310568800369 + 109665620964 = 557287^2 + 331158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420234421333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420234421295 and 420234421304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420234428333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210117210666 + 210117210667.

It is an arithmetic number, because the mean of its divisors is an integer number (210117210667).

Almost surely, 2^420234421333 is an apocalyptic number.

It is an amenable number.

420234421333 is a deficient number, since it is larger than the sum of its proper divisors (1).

420234421333 is an equidigital number, since it uses as much as digits as its factorization.

420234421333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 420234421333 its reverse (333124432024), we get a palindrome (753358853357).

The spelling of 420234421333 in words is "four hundred twenty billion, two hundred thirty-four million, four hundred twenty-one thousand, three hundred thirty-three".