135241619 has 4 divisors (see below), whose sum is σ = 135563280. Its totient is φ = 134919960.

The previous prime is 135241609. The next prime is 135241643. The reversal of 135241619 is 916142531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135241619 - 2⁸ = 135241363 is a prime.

It is a super-2 number, since 2×135241619² = 36580591019482322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135241609) 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, 160199 + ... + 161040.

It is an arithmetic number, because the mean of its divisors is an integer number (33890820).

Almost surely, 2^135241619 is an apocalyptic number.

135241619 is a deficient number, since it is larger than the sum of its proper divisors (321661).

135241619 is an equidigital number, since it uses as much as digits as its factorization.

135241619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321660.

The product of its digits is 6480, while the sum is 32.

The square root of 135241619 is about 11629.3430166970. The cubic root of 135241619 is about 513.2986480284.

The spelling of 135241619 in words is "one hundred thirty-five million, two hundred forty-one thousand, six hundred nineteen".