142478143 has 2 divisors, whose sum is σ = 142478144. Its totient is φ = 142478142.

The previous prime is 142478117. The next prime is 142478179. The reversal of 142478143 is 341874241.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (341874241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142478143 - 2⁵ = 142478111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142478099 and 142478108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142478243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71239071 + 71239072.

It is an arithmetic number, because the mean of its divisors is an integer number (71239072).

Almost surely, 2^142478143 is an apocalyptic number.

142478143 is a deficient number, since it is larger than the sum of its proper divisors (1).

142478143 is an equidigital number, since it uses as much as digits as its factorization.

142478143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 34.

The square root of 142478143 is about 11936.4208622183. The cubic root of 142478143 is about 522.2952570371.

The spelling of 142478143 in words is "one hundred forty-two million, four hundred seventy-eight thousand, one hundred forty-three".