142232471 has 2 divisors, whose sum is σ = 142232472. Its totient is φ = 142232470.

The previous prime is 142232449. The next prime is 142232513. The reversal of 142232471 is 174232241.

It is a weak prime.

It is an emirp because it is prime and its reverse (174232241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142232471 - 2²² = 138038167 is a prime.

It is a super-3 number, since 3×142232471³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142232471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142232401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71116235 + 71116236.

It is an arithmetic number, because the mean of its divisors is an integer number (71116236).

Almost surely, 2^142232471 is an apocalyptic number.

142232471 is a deficient number, since it is larger than the sum of its proper divisors (1).

142232471 is an equidigital number, since it uses as much as digits as its factorization.

142232471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 26.

The square root of 142232471 is about 11926.1255653293. The cubic root of 142232471 is about 521.9948901698.

The spelling of 142232471 in words is "one hundred forty-two million, two hundred thirty-two thousand, four hundred seventy-one".