450143 has 4 divisors (see below), whose sum is σ = 476640. Its totient is φ = 423648.

The previous prime is 450137. The next prime is 450161. The reversal of 450143 is 341054.

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 450143 - 2⁴ = 450127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 26479 = 450143 / (4 + 5 + 0 + 1 + 4 + 3).

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450103) 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, 13223 + ... + 13256.

It is an arithmetic number, because the mean of its divisors is an integer number (119160).

2⁴⁵⁰¹⁴³ is an apocalyptic number.

450143 is a deficient number, since it is larger than the sum of its proper divisors (26497).

450143 is a wasteful number, since it uses less digits than its factorization.

450143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26496.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 450143 is about 670.9269706906. The cubic root of 450143 is about 76.6390595833.

Adding to 450143 its reverse (341054), we get a palindrome (791197).

The spelling of 450143 in words is "four hundred fifty thousand, one hundred forty-three".