142340423 has 2 divisors, whose sum is σ = 142340424. Its totient is φ = 142340422.

The previous prime is 142340417. The next prime is 142340447. The reversal of 142340423 is 324043241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142340423 - 2¹⁰ = 142339399 is a prime.

It is a super-3 number, since 3×142340423³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142340413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71170211 + 71170212.

It is an arithmetic number, because the mean of its divisors is an integer number (71170212).

Almost surely, 2^142340423 is an apocalyptic number.

142340423 is a deficient number, since it is larger than the sum of its proper divisors (1).

142340423 is an equidigital number, since it uses as much as digits as its factorization.

142340423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 142340423 is about 11930.6505690176. The cubic root of 142340423 is about 522.1269184886.

Adding to 142340423 its reverse (324043241), we get a palindrome (466383664).

The spelling of 142340423 in words is "one hundred forty-two million, three hundred forty thousand, four hundred twenty-three".