456440143 has 2 divisors, whose sum is σ = 456440144. Its totient is φ = 456440142.

The previous prime is 456440137. The next prime is 456440147. The reversal of 456440143 is 341044654.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 456440143 - 2⁵ = 456440111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (456440147) 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 as a sum of consecutive naturals, namely, 228220071 + 228220072.

It is an arithmetic number, because the mean of its divisors is an integer number (228220072).

Almost surely, 2^456440143 is an apocalyptic number.

456440143 is a deficient number, since it is larger than the sum of its proper divisors (1).

456440143 is an equidigital number, since it uses as much as digits as its factorization.

456440143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 456440143 is about 21364.4598106294. The cubic root of 456440143 is about 769.9477914790.

Adding to 456440143 its reverse (341044654), we get a palindrome (797484797).

The spelling of 456440143 in words is "four hundred fifty-six million, four hundred forty thousand, one hundred forty-three".