136642 has 8 divisors (see below), whose sum is σ = 223632. Its totient is φ = 62100.

The previous prime is 136621. The next prime is 136649. The reversal of 136642 is 246631.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 6211 = 136642 / (1 + 3 + 6 + 6 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (136649) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 3084 + ... + 3127.

It is an arithmetic number, because the mean of its divisors is an integer number (27954).

2¹³⁶⁶⁴² is an apocalyptic number.

136642 is a deficient number, since it is larger than the sum of its proper divisors (86990).

136642 is a wasteful number, since it uses less digits than its factorization.

136642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6224.

The product of its digits is 864, while the sum is 22.

The square root of 136642 is about 369.6511869317. The cubic root of 136642 is about 51.5064245606.

The spelling of 136642 in words is "one hundred thirty-six thousand, six hundred forty-two".