135420089 has 8 divisors (see below), whose sum is σ = 158540928. Its totient is φ = 113243040.

The previous prime is 135420041. The next prime is 135420101. The reversal of 135420089 is 980024531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135420089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135426089) 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 7 ways as a sum of consecutive naturals, for example, 235637 + ... + 236210.

It is an arithmetic number, because the mean of its divisors is an integer number (19817616).

Almost surely, 2^135420089 is an apocalyptic number.

It is an amenable number.

135420089 is a deficient number, since it is larger than the sum of its proper divisors (23120839).

135420089 is an equidigital number, since it uses as much as digits as its factorization.

135420089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471895.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 135420089 is about 11637.0137492400. The cubic root of 135420089 is about 513.5243382739.

The spelling of 135420089 in words is "one hundred thirty-five million, four hundred twenty thousand, eighty-nine".