421260467818 has 8 divisors (see below), whose sum is σ = 631902485412. Its totient is φ = 210626306016.

The previous prime is 421260467711. The next prime is 421260467839. The reversal of 421260467818 is 818764062124.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 416821310689 + 4439157129 = 645617^2 + 66627^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×421260467818² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1828005 + ... + 2045512.

Almost surely, 2^421260467818 is an apocalyptic number.

421260467818 is a deficient number, since it is larger than the sum of its proper divisors (210642017594).

421260467818 is a wasteful number, since it uses less digits than its factorization.

421260467818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3927896.

The product of its (nonzero) digits is 1032192, while the sum is 49.

The spelling of 421260467818 in words is "four hundred twenty-one billion, two hundred sixty million, four hundred sixty-seven thousand, eight hundred eighteen".