421272608842 has 8 divisors (see below), whose sum is σ = 638423438436. Its totient is φ = 208464796032.

The previous prime is 421272608833. The next prime is 421272608863. The reversal of 421272608842 is 248806272124.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 369188696881 + 52083911961 = 607609^2 + 228219^2 .

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

It is a super-2 number, since 2×421272608842² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421272608792 and 421272608801.

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, 1085753953 + ... + 1085754340.

Almost surely, 2^421272608842 is an apocalyptic number.

421272608842 is a deficient number, since it is larger than the sum of its proper divisors (217150829594).

421272608842 is a wasteful number, since it uses less digits than its factorization.

421272608842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171508392.

The product of its (nonzero) digits is 688128, while the sum is 46.

The spelling of 421272608842 in words is "four hundred twenty-one billion, two hundred seventy-two million, six hundred eight thousand, eight hundred forty-two".