142129993 has 2 divisors, whose sum is σ = 142129994. Its totient is φ = 142129992.

The previous prime is 142129973. The next prime is 142130011. The reversal of 142129993 is 399921241.

142129993 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., 90117049 + 52012944 = 9493^2 + 7212^2 .

It is a cyclic number.

It is not a de Polignac number, because 142129993 - 2¹⁷ = 141998921 is a prime.

It is not a weakly prime, because it can be changed into another prime (142129963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71064996 + 71064997.

It is an arithmetic number, because the mean of its divisors is an integer number (71064997).

Almost surely, 2^142129993 is an apocalyptic number.

It is an amenable number.

142129993 is a deficient number, since it is larger than the sum of its proper divisors (1).

142129993 is an equidigital number, since it uses as much as digits as its factorization.

142129993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 40.

The square root of 142129993 is about 11921.8284252039. The cubic root of 142129993 is about 521.8694948826.

The spelling of 142129993 in words is "one hundred forty-two million, one hundred twenty-nine thousand, nine hundred ninety-three".