136401026 has 4 divisors (see below), whose sum is σ = 204601542. Its totient is φ = 68200512.

The previous prime is 136400993. The next prime is 136401049. The reversal of 136401026 is 620104631.

It is a happy number.

136401026 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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., 123187801 + 13213225 = 11099^2 + 3635^2 .

It is a junction number, because it is equal to n+sod(n) for n = 136400992 and 136401010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34100255 + ... + 34100258.

Almost surely, 2^136401026 is an apocalyptic number.

136401026 is a deficient number, since it is larger than the sum of its proper divisors (68200516).

136401026 is an equidigital number, since it uses as much as digits as its factorization.

136401026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68200515.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 136401026 is about 11679.0849812817. The cubic root of 136401026 is about 514.7612881822.

Adding to 136401026 its reverse (620104631), we get a palindrome (756505657).

The spelling of 136401026 in words is "one hundred thirty-six million, four hundred one thousand, twenty-six".