135606642 has 16 divisors (see below), whose sum is σ = 271537920. Its totient is φ = 45148112.

The previous prime is 135606619. The next prime is 135606673. The reversal of 135606642 is 246606531.

It is a super-2 number, since 2×135606642² = 36778322709032328, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7917 + ... + 18272.

It is an arithmetic number, because the mean of its divisors is an integer number (16971120).

Almost surely, 2^135606642 is an apocalyptic number.

135606642 is an abundant number, since it is smaller than the sum of its proper divisors (135931278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135606642 is a wasteful number, since it uses less digits than its factorization.

135606642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27057.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 135606642 is about 11645.0264920265. The cubic root of 135606642 is about 513.7600382834.

It can be divided in two parts, 13560 and 6642, that added together give a palindrome (20202).

The spelling of 135606642 in words is "one hundred thirty-five million, six hundred six thousand, six hundred forty-two".