421420050051 has 64 divisors (see below), whose sum is σ = 760665916416. Its totient is φ = 202079370240.

The previous prime is 421420050013. The next prime is 421420050089. The reversal of 421420050051 is 150050024124.

It is an interprime number because it is at equal distance from previous prime (421420050013) and next prime (421420050089).

It is not a de Polignac number, because 421420050051 - 2¹⁵ = 421420017283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421420052051) 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 63 ways as a sum of consecutive naturals, for example, 216526 + ... + 943251.

It is an arithmetic number, because the mean of its divisors is an integer number (11885404944).

Almost surely, 2^421420050051 is an apocalyptic number.

421420050051 is a deficient number, since it is larger than the sum of its proper divisors (339245866365).

421420050051 is a wasteful number, since it uses less digits than its factorization.

421420050051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159833 (or 1159811 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 421420050051 its reverse (150050024124), we get a palindrome (571470074175).

The spelling of 421420050051 in words is "four hundred twenty-one billion, four hundred twenty million, fifty thousand, fifty-one".