420344044523 has 48 divisors (see below), whose sum is σ = 474103259136. Its totient is φ = 372270787200.

The previous prime is 420344044507. The next prime is 420344044537. The reversal of 420344044523 is 325440443024.

It is not a de Polignac number, because 420344044523 - 2⁴ = 420344044507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420344044553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82628486 + ... + 82633572.

It is an arithmetic number, because the mean of its divisors is an integer number (9877151232).

Almost surely, 2^420344044523 is an apocalyptic number.

420344044523 is a deficient number, since it is larger than the sum of its proper divisors (53759214613).

420344044523 is a wasteful number, since it uses less digits than its factorization.

420344044523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5364 (or 5351 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 35.

Adding to 420344044523 its reverse (325440443024), we get a palindrome (745784487547).

The spelling of 420344044523 in words is "four hundred twenty billion, three hundred forty-four million, forty-four thousand, five hundred twenty-three".