420523313504450 has 48 divisors (see below), whose sum is σ = 843301025566440. Its totient is φ = 155093099397120.

The previous prime is 420523313504389. The next prime is 420523313504467. The reversal of 420523313504450 is 54405313325024.

It can be written as a sum of positive squares in 12 ways, for example, as 2593449355561 + 417929864148889 = 1610419^2 + 20443333^2 .

It is a junction number, because it is equal to n+sod(n) for n = 420523313504398 and 420523313504407.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 368277695 + ... + 369417794.

Almost surely, 2^{420523313504450} is an apocalyptic number.

420523313504450 is an abundant number, since it is smaller than the sum of its proper divisors (422777712061990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420523313504450 is a wasteful number, since it uses less digits than its factorization.

420523313504450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737696391 (or 737696386 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 41.

Adding to 420523313504450 its reverse (54405313325024), we get a palindrome (474928626829474).

The spelling of 420523313504450 in words is "four hundred twenty trillion, five hundred twenty-three billion, three hundred thirteen million, five hundred four thousand, four hundred fifty".