142001393 has 2 divisors, whose sum is σ = 142001394. Its totient is φ = 142001392.

The previous prime is 142001339. The next prime is 142001399. The reversal of 142001393 is 393100241.

142001393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (142001339) 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., 101767744 + 40233649 = 10088^2 + 6343^2 .

It is an emirp because it is prime and its reverse (393100241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142001393 is a prime.

It is a super-2 number, since 2×142001393² = 40328791227880898, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142001399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71000696 + 71000697.

It is an arithmetic number, because the mean of its divisors is an integer number (71000697).

Almost surely, 2^142001393 is an apocalyptic number.

It is an amenable number.

142001393 is a deficient number, since it is larger than the sum of its proper divisors (1).

142001393 is an equidigital number, since it uses as much as digits as its factorization.

142001393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 142001393 is about 11916.4337366512. The cubic root of 142001393 is about 521.7120505904.

The spelling of 142001393 in words is "one hundred forty-two million, one thousand, three hundred ninety-three".