451242199 has 4 divisors (see below), whose sum is σ = 456678936. Its totient is φ = 445805464.

The previous prime is 451242163. The next prime is 451242217. The reversal of 451242199 is 991242154.

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-451242199 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 (451242499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2718244 + ... + 2718409.

It is an arithmetic number, because the mean of its divisors is an integer number (114169734).

Almost surely, 2^451242199 is an apocalyptic number.

451242199 is a deficient number, since it is larger than the sum of its proper divisors (5436737).

451242199 is an equidigital number, since it uses as much as digits as its factorization.

451242199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5436736.

The product of its digits is 25920, while the sum is 37.

The square root of 451242199 is about 21242.4621689671. The cubic root of 451242199 is about 767.0139022121.

The spelling of 451242199 in words is "four hundred fifty-one million, two hundred forty-two thousand, one hundred ninety-nine".