135420670 has 64 divisors (see below), whose sum is σ = 305358336. Its totient is φ = 42007680.

The previous prime is 135420641. The next prime is 135420673. The reversal of 135420670 is 76024531.

135420670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135420673) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 305469 + ... + 305911.

It is an arithmetic number, because the mean of its divisors is an integer number (4771224).

Almost surely, 2^135420670 is an apocalyptic number.

135420670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135420670 is an abundant number, since it is smaller than the sum of its proper divisors (169937666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135420670 is a wasteful number, since it uses less digits than its factorization.

135420670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 135420670 is about 11637.0387126623. The cubic root of 135420670 is about 513.5250726731.

The spelling of 135420670 in words is "one hundred thirty-five million, four hundred twenty thousand, six hundred seventy".