142057 has 2 divisors, whose sum is σ = 142058. Its totient is φ = 142056.

The previous prime is 142049. The next prime is 142061. The reversal of 142057 is 750241.

142057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72361 + 69696 = 269^2 + 264^2 .

It is a cyclic number.

It is not a de Polignac number, because 142057 - 2³ = 142049 is a prime.

It is a Chen prime.

142057 is a lucky number.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (142007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71028 + 71029.

It is an arithmetic number, because the mean of its divisors is an integer number (71029).

2¹⁴²⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

142057 is a deficient number, since it is larger than the sum of its proper divisors (1).

142057 is an equidigital number, since it uses as much as digits as its factorization.

142057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 142057 is about 376.9044971873. The cubic root of 142057 is about 52.1780141603.

Adding to 142057 its reverse (750241), we get a palindrome (892298).

The spelling of 142057 in words is "one hundred forty-two thousand, fifty-seven".