136264642 has 4 divisors (see below), whose sum is σ = 204396966. Its totient is φ = 68132320.

The previous prime is 136264633. The next prime is 136264657. The reversal of 136264642 is 246462631.

136264642 is digitally balanced in base 2, 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, and also an emirpimes, since its reverse is a distinct semiprime: 246462631 = 61 ⋅4040371.

It can be written as a sum of positive squares in only one way, i.e., 107972881 + 28291761 = 10391^2 + 5319^2 .

It is a junction number, because it is equal to n+sod(n) for n = 136264598 and 136264607.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34066159 + ... + 34066162.

Almost surely, 2^136264642 is an apocalyptic number.

136264642 is a deficient number, since it is larger than the sum of its proper divisors (68132324).

136264642 is an equidigital number, since it uses as much as digits as its factorization.

136264642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68132323.

The product of its digits is 41472, while the sum is 34.

The square root of 136264642 is about 11673.2447074496. The cubic root of 136264642 is about 514.5896652909.

The spelling of 136264642 in words is "one hundred thirty-six million, two hundred sixty-four thousand, six hundred forty-two".