421069912139 has 2 divisors, whose sum is σ = 421069912140. Its totient is φ = 421069912138.

The previous prime is 421069912129. The next prime is 421069912223. The reversal of 421069912139 is 931219960124.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421069912139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421069912093 and 421069912102.

It is not a weakly prime, because it can be changed into another prime (421069912129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210534956069 + 210534956070.

It is an arithmetic number, because the mean of its divisors is an integer number (210534956070).

Almost surely, 2^421069912139 is an apocalyptic number.

421069912139 is a deficient number, since it is larger than the sum of its proper divisors (1).

421069912139 is an equidigital number, since it uses as much as digits as its factorization.

421069912139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 47.

The spelling of 421069912139 in words is "four hundred twenty-one billion, sixty-nine million, nine hundred twelve thousand, one hundred thirty-nine".