135243845 has 16 divisors (see below), whose sum is σ = 177431040. Its totient is φ = 98145600.

The previous prime is 135243839. The next prime is 135243847. The reversal of 135243845 is 548342531.

It is not a de Polignac number, because 135243845 - 2¹² = 135239749 is a prime.

It is a super-2 number, since 2×135243845² = 36581795220768050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135243847) 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 15 ways as a sum of consecutive naturals, for example, 25580 + ... + 30410.

It is an arithmetic number, because the mean of its divisors is an integer number (11089440).

Almost surely, 2^135243845 is an apocalyptic number.

It is an amenable number.

135243845 is a deficient number, since it is larger than the sum of its proper divisors (42187195).

135243845 is a wasteful number, since it uses less digits than its factorization.

135243845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5356.

The product of its digits is 57600, while the sum is 35.

The square root of 135243845 is about 11629.4387224836. The cubic root of 135243845 is about 513.3014642141.

The spelling of 135243845 in words is "one hundred thirty-five million, two hundred forty-three thousand, eight hundred forty-five".