135212906 has 16 divisors (see below), whose sum is σ = 218937600. Its totient is φ = 62436528.

The previous prime is 135212887. The next prime is 135212921. The reversal of 135212906 is 609212531.

135212906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49346 + ... + 52013.

It is an arithmetic number, because the mean of its divisors is an integer number (13683600).

Almost surely, 2^135212906 is an apocalyptic number.

135212906 is a deficient number, since it is larger than the sum of its proper divisors (83724694).

135212906 is a wasteful number, since it uses less digits than its factorization.

135212906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101413.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 135212906 is about 11628.1084446268. The cubic root of 135212906 is about 513.2623194994.

The spelling of 135212906 in words is "one hundred thirty-five million, two hundred twelve thousand, nine hundred six".