136000042 has 4 divisors (see below), whose sum is σ = 204000066. Its totient is φ = 68000020.

The previous prime is 136000027. The next prime is 136000091. The reversal of 136000042 is 240000631.

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., 102232321 + 33767721 = 10111^2 + 5811^2 .

It is a super-2 number, since 2×136000042² = 36992022848003528, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34000009 + ... + 34000012.

Almost surely, 2^136000042 is an apocalyptic number.

136000042 is a deficient number, since it is larger than the sum of its proper divisors (68000024).

136000042 is an equidigital number, since it uses as much as digits as its factorization.

136000042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68000023.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 136000042 is about 11661.9055904256. The cubic root of 136000042 is about 514.2563710698.

Adding to 136000042 its reverse (240000631), we get a palindrome (376000673).

The spelling of 136000042 in words is "one hundred thirty-six million, forty-two", and thus it is an aban number.