135243250 has 32 divisors (see below), whose sum is σ = 254067840. Its totient is φ = 53906800.

The previous prime is 135243217. The next prime is 135243263. The reversal of 135243250 is 52342531.

135243250 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 (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85971 + ... + 87529.

It is an arithmetic number, because the mean of its divisors is an integer number (7939620).

Almost surely, 2^135243250 is an apocalyptic number.

135243250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135243250 is a deficient number, since it is larger than the sum of its proper divisors (118824590).

135243250 is a wasteful number, since it uses less digits than its factorization.

135243250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923 (or 1913 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 135243250 is about 11629.4131408253. The cubic root of 135243250 is about 513.3007114631.

Adding to 135243250 its reverse (52342531), we get a palindrome (187585781).

The spelling of 135243250 in words is "one hundred thirty-five million, two hundred forty-three thousand, two hundred fifty".