421216434526 has 8 divisors (see below), whose sum is σ = 632309555664. Its totient is φ = 210446582640.

The previous prime is 421216434523. The next prime is 421216434539. The reversal of 421216434526 is 625434612124.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421216434523) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 80814055 + ... + 80819266.

It is an arithmetic number, because the mean of its divisors is an integer number (79038694458).

Almost surely, 2^421216434526 is an apocalyptic number.

421216434526 is a deficient number, since it is larger than the sum of its proper divisors (211093121138).

421216434526 is a wasteful number, since it uses less digits than its factorization.

421216434526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161634626.

The product of its digits is 276480, while the sum is 40.

The spelling of 421216434526 in words is "four hundred twenty-one billion, two hundred sixteen million, four hundred thirty-four thousand, five hundred twenty-six".