420523013540 has 48 divisors (see below), whose sum is σ = 1016959515264. Its totient is φ = 143078707200.

The previous prime is 420523013527. The next prime is 420523013549. The reversal of 420523013540 is 45310325024.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (420523013549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11446301 + ... + 11482980.

It is an arithmetic number, because the mean of its divisors is an integer number (21186656568).

Almost surely, 2^420523013540 is an apocalyptic number.

It is an amenable number.

420523013540 is an abundant number, since it is smaller than the sum of its proper divisors (596436501724).

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

420523013540 is a wasteful number, since it uses less digits than its factorization.

420523013540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22929428 (or 22929426 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 420523013540 its reverse (45310325024), we get a palindrome (465833338564).

The spelling of 420523013540 in words is "four hundred twenty billion, five hundred twenty-three million, thirteen thousand, five hundred forty".