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143057 = 294933

143057 has 4 divisors (see below), whose sum is σ = 148020. Its totient is φ = 138096.

The previous prime is 143053. The next prime is 143063. The reversal of 143057 is 750341.

It is a happy number.

143057 is nontrivially palindromic in base 15.

143057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 750341 = 4118301.

It can be written as a sum of positive squares in 2 ways, for example, as 59536 + 83521 = 244^2 + 289^2 .

It is a cyclic number.

It is not a de Polignac number, because 143057 - 22 = 143053 is a prime.

It is a Duffinian 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 143057.

It is not an unprimeable number, because it can be changed into a prime (143053) 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, 2438 + ... + 2495.

It is an arithmetic number, because the mean of its divisors is an integer number (37005).

2143057 is an apocalyptic number.

It is an amenable number.

143057 is a deficient number, since it is larger than the sum of its proper divisors (4963).

143057 is an equidigital number, since it uses as much as digits as its factorization.

143057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4962.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 143057 is about 378.2287667537. The cubic root of 143057 is about 52.3001624442.

Adding to 143057 its reverse (750341), we get a palindrome (893398).

The spelling of 143057 in words is "one hundred forty-three thousand, fifty-seven".

Divisors: 1 29 4933 143057