457642543 has 2 divisors, whose sum is σ = 457642544. Its totient is φ = 457642542.

The previous prime is 457642519. The next prime is 457642561. The reversal of 457642543 is 345246754.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 457642543 - 2⁵ = 457642511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 457642496 and 457642505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (457642513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228821271 + 228821272.

It is an arithmetic number, because the mean of its divisors is an integer number (228821272).

Almost surely, 2^457642543 is an apocalyptic number.

457642543 is a deficient number, since it is larger than the sum of its proper divisors (1).

457642543 is an equidigital number, since it uses as much as digits as its factorization.

457642543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 40.

The square root of 457642543 is about 21392.5814945275. The cubic root of 457642543 is about 770.6232896756.

The spelling of 457642543 in words is "four hundred fifty-seven million, six hundred forty-two thousand, five hundred forty-three".