143457 has 4 divisors (see below), whose sum is σ = 191280. Its totient is φ = 95636.

The previous prime is 143443. The next prime is 143461. The reversal of 143457 is 754341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 143457 - 2⁷ = 143329 is a prime.

It is a D-number.

It is a nialpdrome in base 11.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143457.

It is not an unprimeable number, because it can be changed into a prime (143467) 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, 23907 + ... + 23912.

It is an arithmetic number, because the mean of its divisors is an integer number (47820).

2¹⁴³⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

143457 is a deficient number, since it is larger than the sum of its proper divisors (47823).

143457 is an equidigital number, since it uses as much as digits as its factorization.

143457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47822.

The product of its digits is 1680, while the sum is 24.

The square root of 143457 is about 378.7571781498. The cubic root of 143457 is about 52.3488623729.

Adding to 143457 its reverse (754341), we get a palindrome (897798).

The spelling of 143457 in words is "one hundred forty-three thousand, four hundred fifty-seven".