142153993 has 2 divisors, whose sum is σ = 142153994. Its totient is φ = 142153992.

The previous prime is 142153939. The next prime is 142153997. The reversal of 142153993 is 399351241.

Together with previous prime (142153939) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84879369 + 57274624 = 9213^2 + 7568^2 .

It is a cyclic number.

It is not a de Polignac number, because 142153993 - 2⁹ = 142153481 is a prime.

It is not a weakly prime, because it can be changed into another prime (142153997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71076996 + 71076997.

It is an arithmetic number, because the mean of its divisors is an integer number (71076997).

Almost surely, 2^142153993 is an apocalyptic number.

It is an amenable number.

142153993 is a deficient number, since it is larger than the sum of its proper divisors (1).

142153993 is an equidigital number, since it uses as much as digits as its factorization.

142153993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 37.

The square root of 142153993 is about 11922.8349397281. The cubic root of 142153993 is about 521.8988674372.

The spelling of 142153993 in words is "one hundred forty-two million, one hundred fifty-three thousand, nine hundred ninety-three".