421335245540 has 24 divisors (see below), whose sum is σ = 965240744832. Its totient is φ = 153212816480.

The previous prime is 421335245407. The next prime is 421335245549. The reversal of 421335245540 is 45542533124.

It is a junction number, because it is equal to n+sod(n) for n = 421335245494 and 421335245503.

It is not an unprimeable number, because it can be changed into a prime (421335245549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 957579884 + ... + 957580323.

It is an arithmetic number, because the mean of its divisors is an integer number (40218364368).

Almost surely, 2^421335245540 is an apocalyptic number.

It is an amenable number.

421335245540 is an abundant number, since it is smaller than the sum of its proper divisors (543905499292).

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

421335245540 is a wasteful number, since it uses less digits than its factorization.

421335245540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915160227 (or 1915160225 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 421335245540 its reverse (45542533124), we get a palindrome (466877778664).

The spelling of 421335245540 in words is "four hundred twenty-one billion, three hundred thirty-five million, two hundred forty-five thousand, five hundred forty".