135121724 has 12 divisors (see below), whose sum is σ = 236561304. Its totient is φ = 67532784.

The previous prime is 135121703. The next prime is 135121747. The reversal of 135121724 is 427121531.

It is a junction number, because it is equal to n+sod(n) for n = 135121693 and 135121702.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 6854 + ... + 17810.

It is an arithmetic number, because the mean of its divisors is an integer number (19713442).

Almost surely, 2^135121724 is an apocalyptic number.

It is an amenable number.

135121724 is a deficient number, since it is larger than the sum of its proper divisors (101439580).

135121724 is a wasteful number, since it uses less digits than its factorization.

135121724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14044 (or 14042 counting only the distinct ones).

The product of its digits is 1680, while the sum is 26.

The square root of 135121724 is about 11624.1870253364. The cubic root of 135121724 is about 513.1469192510.

The spelling of 135121724 in words is "one hundred thirty-five million, one hundred twenty-one thousand, seven hundred twenty-four".