4200491 has 4 divisors (see below), whose sum is σ = 4302984. Its totient is φ = 4098000.

The previous prime is 4200487. The next prime is 4200523. The reversal of 4200491 is 1940024.

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

It is a cyclic number.

It is not a de Polignac number, because 4200491 - 2² = 4200487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4200401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51185 + ... + 51266.

It is an arithmetic number, because the mean of its divisors is an integer number (1075746).

Almost surely, 2^4200491 is an apocalyptic number.

4200491 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

4200491 is a deficient number, since it is larger than the sum of its proper divisors (102493).

4200491 is a wasteful number, since it uses less digits than its factorization.

4200491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102492.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 4200491 is about 2049.5099414250. The cubic root of 4200491 is about 161.3491516072.

The spelling of 4200491 in words is "four million, two hundred thousand, four hundred ninety-one".