135142207 has 2 divisors, whose sum is σ = 135142208. Its totient is φ = 135142206.

The previous prime is 135142201. The next prime is 135142229. The reversal of 135142207 is 702241531.

It is a happy number.

135142207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135142207 is a prime.

It is a super-2 number, since 2×135142207² = 36526832225661698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135142201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67571103 + 67571104.

It is an arithmetic number, because the mean of its divisors is an integer number (67571104).

Almost surely, 2^135142207 is an apocalyptic number.

135142207 is a deficient number, since it is larger than the sum of its proper divisors (1).

135142207 is an equidigital number, since it uses as much as digits as its factorization.

135142207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 135142207 is about 11625.0680428116. The cubic root of 135142207 is about 513.1728471255.

Adding to 135142207 its reverse (702241531), we get a palindrome (837383738).

The spelling of 135142207 in words is "one hundred thirty-five million, one hundred forty-two thousand, two hundred seven".