421421133660 has 48 divisors (see below), whose sum is σ = 1184680328832. Its totient is φ = 111931240000.

The previous prime is 421421133659. The next prime is 421421133677. The reversal of 421421133660 is 66331124124.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13976346 + ... + 14006465.

It is an arithmetic number, because the mean of its divisors is an integer number (24680840184).

Almost surely, 2^421421133660 is an apocalyptic number.

It is an amenable number.

421421133660 is an abundant number, since it is smaller than the sum of its proper divisors (763259195172).

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

421421133660 is a wasteful number, since it uses less digits than its factorization.

421421133660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27983074 (or 27983072 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 421421133660 its reverse (66331124124), we get a palindrome (487752257784).

The spelling of 421421133660 in words is "four hundred twenty-one billion, four hundred twenty-one million, one hundred thirty-three thousand, six hundred sixty".