135952129 has 4 divisors (see below), whose sum is σ = 136027584. Its totient is φ = 135876676.

The previous prime is 135952123. The next prime is 135952133. The reversal of 135952129 is 921259531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 921259531 = 1021 ⋅902311.

It is a cyclic number.

It is not a de Polignac number, because 135952129 - 2⁷ = 135952001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135952123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34957 + ... + 38650.

It is an arithmetic number, because the mean of its divisors is an integer number (34006896).

Almost surely, 2^135952129 is an apocalyptic number.

It is an amenable number.

135952129 is a deficient number, since it is larger than the sum of its proper divisors (75455).

135952129 is an equidigital number, since it uses as much as digits as its factorization.

135952129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75454.

The product of its digits is 24300, while the sum is 37.

The square root of 135952129 is about 11659.8511568544. The cubic root of 135952129 is about 514.1959729032.

The spelling of 135952129 in words is "one hundred thirty-five million, nine hundred fifty-two thousand, one hundred twenty-nine".