136243020 has 24 divisors (see below), whose sum is σ = 381480624. Its totient is φ = 36331456.

The previous prime is 136242973. The next prime is 136243021. The reversal of 136243020 is 20342631.

It is a happy number.

136243020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (136243021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1135299 + ... + 1135418.

It is an arithmetic number, because the mean of its divisors is an integer number (15895026).

Almost surely, 2^136243020 is an apocalyptic number.

136243020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136243020 is an abundant number, since it is smaller than the sum of its proper divisors (245237604).

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

136243020 is a wasteful number, since it uses less digits than its factorization.

136243020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270729 (or 2270727 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 136243020 is about 11672.3185357494. The cubic root of 136243020 is about 514.5624460844.

Adding to 136243020 its reverse (20342631), we get a palindrome (156585651).

The spelling of 136243020 in words is "one hundred thirty-six million, two hundred forty-three thousand, twenty".