142975471 has 2 divisors, whose sum is σ = 142975472. Its totient is φ = 142975470.

The previous prime is 142975453. The next prime is 142975477. The reversal of 142975471 is 174579241.

142975471 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 is an emirp because it is prime and its reverse (174579241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142975471 - 2⁵ = 142975439 is a prime.

It is a super-3 number, since 3×142975471³ (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 (142975477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71487735 + 71487736.

It is an arithmetic number, because the mean of its divisors is an integer number (71487736).

Almost surely, 2^142975471 is an apocalyptic number.

142975471 is a deficient number, since it is larger than the sum of its proper divisors (1).

142975471 is an equidigital number, since it uses as much as digits as its factorization.

142975471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 40.

The square root of 142975471 is about 11957.2350901034. The cubic root of 142975471 is about 522.9022516925.

The spelling of 142975471 in words is "one hundred forty-two million, nine hundred seventy-five thousand, four hundred seventy-one".