421420052051 has 2 divisors, whose sum is σ = 421420052052. Its totient is φ = 421420052050.

The previous prime is 421420052029. The next prime is 421420052113. The reversal of 421420052051 is 150250024124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421420052051 - 2¹⁰ = 421420051027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421420052051.

It is not a weakly prime, because it can be changed into another prime (421420252051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210710026025 + 210710026026.

It is an arithmetic number, because the mean of its divisors is an integer number (210710026026).

Almost surely, 2^421420052051 is an apocalyptic number.

421420052051 is a deficient number, since it is larger than the sum of its proper divisors (1).

421420052051 is an equidigital number, since it uses as much as digits as its factorization.

421420052051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 421420052051 its reverse (150250024124), we get a palindrome (571670076175).

The spelling of 421420052051 in words is "four hundred twenty-one billion, four hundred twenty million, fifty-two thousand, fifty-one".