136242120 has 128 divisors (see below), whose sum is σ = 469751040. Its totient is φ = 30965760.

The previous prime is 136242109. The next prime is 136242157. The reversal of 136242120 is 21242631.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 31 ways as a sum of consecutive naturals, for example, 202104 + ... + 202776.

It is an arithmetic number, because the mean of its divisors is an integer number (3669930).

Almost surely, 2^136242120 is an apocalyptic number.

136242120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136242120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234875520).

136242120 is an abundant number, since it is smaller than the sum of its proper divisors (333508920).

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

136242120 is a wasteful number, since it uses less digits than its factorization.

136242120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935 (or 931 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 136242120 is about 11672.2799829339. The cubic root of 136242120 is about 514.5613130424.

Adding to 136242120 its reverse (21242631), we get a palindrome (157484751).

The spelling of 136242120 in words is "one hundred thirty-six million, two hundred forty-two thousand, one hundred twenty".