135125210 has 32 divisors (see below), whose sum is σ = 274492800. Its totient is φ = 47440960.

The previous prime is 135125183. The next prime is 135125227. The reversal of 135125210 is 12521531.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17990 + ... + 24369.

It is an arithmetic number, because the mean of its divisors is an integer number (8577900).

Almost surely, 2^135125210 is an apocalyptic number.

135125210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135125210 is an abundant number, since it is smaller than the sum of its proper divisors (139367590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135125210 is a wasteful number, since it uses less digits than its factorization.

135125210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42406.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 135125210 is about 11624.3369703394. The cubic root of 135125210 is about 513.1513320987.

Adding to 135125210 its reverse (12521531), we get a palindrome (147646741).

The spelling of 135125210 in words is "one hundred thirty-five million, one hundred twenty-five thousand, two hundred ten".