135420873 has 16 divisors (see below), whose sum is σ = 206545920. Its totient is φ = 77312016.

The previous prime is 135420863. The next prime is 135420881. The reversal of 135420873 is 378024531.

It is not a de Polignac number, because 135420873 - 2⁵ = 135420841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135420823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27708 + ... + 32226.

It is an arithmetic number, because the mean of its divisors is an integer number (12909120).

Almost surely, 2^135420873 is an apocalyptic number.

It is an amenable number.

135420873 is a deficient number, since it is larger than the sum of its proper divisors (71125047).

135420873 is a wasteful number, since it uses less digits than its factorization.

135420873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5956.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 135420873 is about 11637.0474348092. The cubic root of 135420873 is about 513.5253292699.

The spelling of 135420873 in words is "one hundred thirty-five million, four hundred twenty thousand, eight hundred seventy-three".