136615442 has 4 divisors (see below), whose sum is σ = 204923166. Its totient is φ = 68307720.

The previous prime is 136615393. The next prime is 136615459. The reversal of 136615442 is 244516631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244516631 = 14107 ⋅17333.

It can be written as a sum of positive squares in only one way, i.e., 117527281 + 19088161 = 10841^2 + 4369^2 .

It is a junction number, because it is equal to n+sod(n) for n = 136615399 and 136615408.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34153859 + ... + 34153862.

Almost surely, 2^136615442 is an apocalyptic number.

136615442 is a deficient number, since it is larger than the sum of its proper divisors (68307724).

136615442 is an equidigital number, since it uses as much as digits as its factorization.

136615442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68307723.

The product of its digits is 17280, while the sum is 32.

The square root of 136615442 is about 11688.2608629342. The cubic root of 136615442 is about 515.0308738207.

The spelling of 136615442 in words is "one hundred thirty-six million, six hundred fifteen thousand, four hundred forty-two".