135123250 has 32 divisors (see below), whose sum is σ = 266273280. Its totient is φ = 51202800.

The previous prime is 135123227. The next prime is 135123299. The reversal of 135123250 is 52321531.

It is a congruent number.

It is an unprimeable number.

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, 9474 + ... + 18973.

It is an arithmetic number, because the mean of its divisors is an integer number (8321040).

Almost surely, 2^135123250 is an apocalyptic number.

135123250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135123250 is a deficient number, since it is larger than the sum of its proper divisors (131150030).

135123250 is a wasteful number, since it uses less digits than its factorization.

135123250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28483 (or 28473 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 135123250 is about 11624.2526641501. The cubic root of 135123250 is about 513.1488509889.

Adding to 135123250 its reverse (52321531), we get a palindrome (187444781).

The spelling of 135123250 in words is "one hundred thirty-five million, one hundred twenty-three thousand, two hundred fifty".