142140293 has 2 divisors, whose sum is σ = 142140294. Its totient is φ = 142140292.

The previous prime is 142140259. The next prime is 142140307. The reversal of 142140293 is 392041241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131629729 + 10510564 = 11473^2 + 3242^2 .

It is a cyclic number.

It is not a de Polignac number, because 142140293 - 2¹⁴ = 142123909 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142143293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71070146 + 71070147.

It is an arithmetic number, because the mean of its divisors is an integer number (71070147).

Almost surely, 2^142140293 is an apocalyptic number.

It is an amenable number.

142140293 is a deficient number, since it is larger than the sum of its proper divisors (1).

142140293 is an equidigital number, since it uses as much as digits as its factorization.

142140293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 142140293 is about 11922.2603980957. The cubic root of 142140293 is about 521.8821010090.

It can be divided in two parts, 1421 and 40293, that added together give a palindrome (41714).

The spelling of 142140293 in words is "one hundred forty-two million, one hundred forty thousand, two hundred ninety-three".