420544207144 has 16 divisors (see below), whose sum is σ = 807752593620. Its totient is φ = 205143515520.

The previous prime is 420544207093. The next prime is 420544207147. The reversal of 420544207144 is 441702445024.

It can be written as a sum of positive squares in 2 ways, for example, as 360886144644 + 59658062500 = 600738^2 + 244250^2 .

It is not an unprimeable number, because it can be changed into a prime (420544207147) 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, 641073159 + ... + 641073814.

Almost surely, 2^420544207144 is an apocalyptic number.

It is an amenable number.

420544207144 is a deficient number, since it is larger than the sum of its proper divisors (387208386476).

420544207144 is a wasteful number, since it uses less digits than its factorization.

420544207144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282147020 (or 1282147016 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 37.

The spelling of 420544207144 in words is "four hundred twenty billion, five hundred forty-four million, two hundred seven thousand, one hundred forty-four".