136667042 has 4 divisors (see below), whose sum is σ = 205000566. Its totient is φ = 68333520.

The previous prime is 136667033. The next prime is 136667093. The reversal of 136667042 is 240766631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 131997121 + 4669921 = 11489^2 + 2161^2 .

It is a junction number, because it is equal to n+sod(n) for n = 136666993 and 136667011.

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 as a sum of consecutive naturals, namely, 34166759 + ... + 34166762.

Almost surely, 2^136667042 is an apocalyptic number.

136667042 is a deficient number, since it is larger than the sum of its proper divisors (68333524).

136667042 is an equidigital number, since it uses as much as digits as its factorization.

136667042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68333523.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 136667042 is about 11690.4679974756. The cubic root of 136667042 is about 515.0957084824.

The spelling of 136667042 in words is "one hundred thirty-six million, six hundred sixty-seven thousand, forty-two".