142145533 has 2 divisors, whose sum is σ = 142145534. Its totient is φ = 142145532.

The previous prime is 142145513. The next prime is 142145561. The reversal of 142145533 is 335541241.

It is an a-pointer prime, because the next prime (142145561) can be obtained adding 142145533 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142134084 + 11449 = 11922^2 + 107^2 .

It is a cyclic number.

It is not a de Polignac number, because 142145533 - 2¹⁷ = 142014461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142145503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71072766 + 71072767.

It is an arithmetic number, because the mean of its divisors is an integer number (71072767).

Almost surely, 2^142145533 is an apocalyptic number.

It is an amenable number.

142145533 is a deficient number, since it is larger than the sum of its proper divisors (1).

142145533 is an equidigital number, since it uses as much as digits as its factorization.

142145533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 28.

The square root of 142145533 is about 11922.4801530554. The cubic root of 142145533 is about 521.8885139890. Note that the first 3 decimals are identical.

Adding to 142145533 its reverse (335541241), we get a palindrome (477686774).

The spelling of 142145533 in words is "one hundred forty-two million, one hundred forty-five thousand, five hundred thirty-three".