135012541 has 4 divisors (see below), whose sum is σ = 135998172. Its totient is φ = 134026912.

The previous prime is 135012539. The next prime is 135012547. The reversal of 135012541 is 145210531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 145210531 = 89 ⋅1631579.

It can be written as a sum of positive squares in 2 ways, for example, as 87815641 + 47196900 = 9371^2 + 6870^2 .

It is a cyclic number.

It is not a de Polignac number, because 135012541 - 2¹ = 135012539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135012547) 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, 492610 + ... + 492883.

It is an arithmetic number, because the mean of its divisors is an integer number (33999543).

Almost surely, 2^135012541 is an apocalyptic number.

It is an amenable number.

135012541 is a deficient number, since it is larger than the sum of its proper divisors (985631).

135012541 is an equidigital number, since it uses as much as digits as its factorization.

135012541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985630.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 135012541 is about 11619.4897048020. The cubic root of 135012541 is about 513.0086685544.

The spelling of 135012541 in words is "one hundred thirty-five million, twelve thousand, five hundred forty-one".