10420028191 has 4 divisors (see below), whose sum is σ = 10662354472. Its totient is φ = 10177701912.

The previous prime is 10420028149. The next prime is 10420028239. The reversal of 10420028191 is 19182002401.

10420028191 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19182002401 = 31 ⋅618774271.

It is a cyclic number.

It is not a de Polignac number, because 10420028191 - 2⁹ = 10420027679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10420028141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121163076 + ... + 121163161.

It is an arithmetic number, because the mean of its divisors is an integer number (2665588618).

Almost surely, 2^10420028191 is an apocalyptic number.

10420028191 is a deficient number, since it is larger than the sum of its proper divisors (242326281).

10420028191 is an equidigital number, since it uses as much as digits as its factorization.

10420028191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242326280.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 10420028191 in words is "ten billion, four hundred twenty million, twenty-eight thousand, one hundred ninety-one".