135122571 has 12 divisors (see below), whose sum is σ = 201907680. Its totient is φ = 86975280.

The previous prime is 135122569. The next prime is 135122591. The reversal of 135122571 is 175221531.

It is not a de Polignac number, because 135122571 - 2¹ = 135122569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135122551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258595 + ... + 259116.

It is an arithmetic number, because the mean of its divisors is an integer number (16825640).

Almost surely, 2^135122571 is an apocalyptic number.

135122571 is a deficient number, since it is larger than the sum of its proper divisors (66785109).

135122571 is a wasteful number, since it uses less digits than its factorization.

135122571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517746 (or 517743 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 135122571 is about 11624.2234579347. The cubic root of 135122571 is about 513.1479914559.

The spelling of 135122571 in words is "one hundred thirty-five million, one hundred twenty-two thousand, five hundred seventy-one".