136866242 has 8 divisors (see below), whose sum is σ = 205549500. Its totient is φ = 68349744.

The previous prime is 136866239. The next prime is 136866251. The reversal of 136866242 is 242668631.

It can be written as a sum of positive squares in 2 ways, for example, as 129254161 + 7612081 = 11369^2 + 2759^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×136866242³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 136866196 and 136866205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39617 + ... + 42932.

Almost surely, 2^136866242 is an apocalyptic number.

136866242 is a deficient number, since it is larger than the sum of its proper divisors (68683258).

136866242 is an equidigital number, since it uses as much as digits as its factorization.

136866242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83380.

The product of its digits is 82944, while the sum is 38.

The square root of 136866242 is about 11698.9846567982. The cubic root of 136866242 is about 515.3458474383.

The spelling of 136866242 in words is "one hundred thirty-six million, eight hundred sixty-six thousand, two hundred forty-two".