451242431 has 4 divisors (see below), whose sum is σ = 451483200. Its totient is φ = 451001664.

The previous prime is 451242427. The next prime is 451242481. The reversal of 451242431 is 134242154.

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 451242431 - 2² = 451242427 is a prime.

It is a super-2 number, since 2×451242431² = 407239463069579522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 451242431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451242481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117551 + ... + 121328.

It is an arithmetic number, because the mean of its divisors is an integer number (112870800).

Almost surely, 2^451242431 is an apocalyptic number.

451242431 is a deficient number, since it is larger than the sum of its proper divisors (240769).

451242431 is a wasteful number, since it uses less digits than its factorization.

451242431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240768.

The product of its digits is 3840, while the sum is 26.

The square root of 451242431 is about 21242.4676297270. The cubic root of 451242431 is about 767.0140336619.

Adding to 451242431 its reverse (134242154), we get a palindrome (585484585).

The spelling of 451242431 in words is "four hundred fifty-one million, two hundred forty-two thousand, four hundred thirty-one".