420013230191 has 2 divisors, whose sum is σ = 420013230192. Its totient is φ = 420013230190.

The previous prime is 420013230181. The next prime is 420013230211. The reversal of 420013230191 is 191032310024.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420013230191 is a prime.

It is a super-2 number, since 2×420013230191² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 420013230191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420013230181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210006615095 + 210006615096.

It is an arithmetic number, because the mean of its divisors is an integer number (210006615096).

Almost surely, 2^420013230191 is an apocalyptic number.

420013230191 is a deficient number, since it is larger than the sum of its proper divisors (1).

420013230191 is an equidigital number, since it uses as much as digits as its factorization.

420013230191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 420013230191 in words is "four hundred twenty billion, thirteen million, two hundred thirty thousand, one hundred ninety-one".