424100191 has 4 divisors (see below), whose sum is σ = 424485792. Its totient is φ = 423714592.

The previous prime is 424100153. The next prime is 424100227. The reversal of 424100191 is 191001424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424100191 is a prime.

It is a super-5 number, since 5×424100191⁵ (a number of 44 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424100101) 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, 191146 + ... + 193351.

It is an arithmetic number, because the mean of its divisors is an integer number (106121448).

Almost surely, 2^424100191 is an apocalyptic number.

424100191 is a deficient number, since it is larger than the sum of its proper divisors (385601).

424100191 is a wasteful number, since it uses less digits than its factorization.

424100191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385600.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 424100191 is about 20593.6929908164. The cubic root of 424100191 is about 751.3163200874.

The spelling of 424100191 in words is "four hundred twenty-four million, one hundred thousand, one hundred ninety-one".