135142229 has 2 divisors, whose sum is σ = 135142230. Its totient is φ = 135142228.

The previous prime is 135142207. The next prime is 135142247. The reversal of 135142229 is 922241531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110292004 + 24850225 = 10502^2 + 4985^2 .

It is an emirp because it is prime and its reverse (922241531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135142229 - 2⁸ = 135141973 is a prime.

It is equal to p_7653143 and since 135142229 and 7653143 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135142279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67571114 + 67571115.

It is an arithmetic number, because the mean of its divisors is an integer number (67571115).

Almost surely, 2^135142229 is an apocalyptic number.

It is an amenable number.

135142229 is a deficient number, since it is larger than the sum of its proper divisors (1).

135142229 is an equidigital number, since it uses as much as digits as its factorization.

135142229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 135142229 is about 11625.0689890426. The cubic root of 135142229 is about 513.1728749722.

The spelling of 135142229 in words is "one hundred thirty-five million, one hundred forty-two thousand, two hundred twenty-nine".