136488242 has 18 divisors (see below), whose sum is σ = 225336447. Its totient is φ = 61957500.

The previous prime is 136488241. The next prime is 136488263. The reversal of 136488242 is 242884631.

It can be written as a sum of positive squares in only one way, i.e., 68244121 + 68244121 = 8261^2 + 8261^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8261.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136488196 and 136488205.

It is not an unprimeable number, because it can be changed into a prime (136488241) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 181367 + ... + 182117.

Almost surely, 2^136488242 is an apocalyptic number.

136488242 is a deficient number, since it is larger than the sum of its proper divisors (88848205).

136488242 is an frugal number, since it uses more digits than its factorization.

136488242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526 (or 764 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The square root of 136488242 is about 11682.8182387641. The cubic root of 136488242 is about 514.8709790850.

Multiplying 136488242 by its product of digits (73728), we get a square (10063005106176 = 3172224²).

The spelling of 136488242 in words is "one hundred thirty-six million, four hundred eighty-eight thousand, two hundred forty-two".