142664233 has 2 divisors, whose sum is σ = 142664234. Its totient is φ = 142664232.

The previous prime is 142664231. The next prime is 142664243. The reversal of 142664233 is 332466241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98148649 + 44515584 = 9907^2 + 6672^2 .

It is a cyclic number.

It is not a de Polignac number, because 142664233 - 2¹ = 142664231 is a prime.

Together with 142664231, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 142664195 and 142664204.

It is not a weakly prime, because it can be changed into another prime (142664231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71332116 + 71332117.

It is an arithmetic number, because the mean of its divisors is an integer number (71332117).

Almost surely, 2^142664233 is an apocalyptic number.

It is an amenable number.

142664233 is a deficient number, since it is larger than the sum of its proper divisors (1).

142664233 is an equidigital number, since it uses as much as digits as its factorization.

142664233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 31.

The square root of 142664233 is about 11944.2133688243. The cubic root of 142664233 is about 522.5225471982.

The spelling of 142664233 in words is "one hundred forty-two million, six hundred sixty-four thousand, two hundred thirty-three".