135123645 has 8 divisors (see below), whose sum is σ = 216197856. Its totient is φ = 72065936.

The previous prime is 135123613. The next prime is 135123671. The reversal of 135123645 is 546321531.

135123645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 135123645 - 2⁵ = 135123613 is a prime.

It is a congruent number.

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, 4504107 + ... + 4504136.

It is an arithmetic number, because the mean of its divisors is an integer number (27024732).

Almost surely, 2^135123645 is an apocalyptic number.

135123645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135123645 is a deficient number, since it is larger than the sum of its proper divisors (81074211).

135123645 is an equidigital number, since it uses as much as digits as its factorization.

135123645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9008251.

The product of its digits is 10800, while the sum is 30.

The square root of 135123645 is about 11624.2696544772. The cubic root of 135123645 is about 513.1493510104.

The spelling of 135123645 in words is "one hundred thirty-five million, one hundred twenty-three thousand, six hundred forty-five".