142781059 has 2 divisors, whose sum is σ = 142781060. Its totient is φ = 142781058.

The previous prime is 142781021. The next prime is 142781063. The reversal of 142781059 is 950187241.

It is a strong prime.

It is an emirp because it is prime and its reverse (950187241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142781059 - 2¹¹ = 142779011 is a prime.

It is a super-2 number, since 2×142781059² = 40772861618322962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142781459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71390529 + 71390530.

It is an arithmetic number, because the mean of its divisors is an integer number (71390530).

Almost surely, 2^142781059 is an apocalyptic number.

142781059 is a deficient number, since it is larger than the sum of its proper divisors (1).

142781059 is an equidigital number, since it uses as much as digits as its factorization.

142781059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 142781059 is about 11949.1028533526. The cubic root of 142781059 is about 522.6651373967.

The spelling of 142781059 in words is "one hundred forty-two million, seven hundred eighty-one thousand, fifty-nine".