136042257 has 8 divisors (see below), whose sum is σ = 195342784. Its totient is φ = 83718288.

The previous prime is 136042243. The next prime is 136042267. The reversal of 136042257 is 752240631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136042257 - 2⁴ = 136042241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136042267) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1744093 + ... + 1744170.

It is an arithmetic number, because the mean of its divisors is an integer number (24417848).

Almost surely, 2^136042257 is an apocalyptic number.

It is an amenable number.

136042257 is a deficient number, since it is larger than the sum of its proper divisors (59300527).

136042257 is a wasteful number, since it uses less digits than its factorization.

136042257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3488279.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 136042257 is about 11663.7154029066. The cubic root of 136042257 is about 514.3095746976.

Adding to 136042257 its reverse (752240631), we get a palindrome (888282888).

The spelling of 136042257 in words is "one hundred thirty-six million, forty-two thousand, two hundred fifty-seven".