135124529 has 4 divisors (see below), whose sum is σ = 135214320. Its totient is φ = 135034740.

The previous prime is 135124501. The next prime is 135124537. The reversal of 135124529 is 925421531.

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: 925421531 = 83 ⋅11149657.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135124529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135124495 and 135124504.

It is not an unprimeable number, because it can be changed into a prime (135124559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42599 + ... + 45660.

It is an arithmetic number, because the mean of its divisors is an integer number (33803580).

Almost surely, 2^135124529 is an apocalyptic number.

It is an amenable number.

135124529 is a deficient number, since it is larger than the sum of its proper divisors (89791).

135124529 is an equidigital number, since it uses as much as digits as its factorization.

135124529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89790.

The product of its digits is 10800, while the sum is 32.

The square root of 135124529 is about 11624.3076783093. The cubic root of 135124529 is about 513.1504700424.

The spelling of 135124529 in words is "one hundred thirty-five million, one hundred twenty-four thousand, five hundred twenty-nine".