135684542 has 16 divisors (see below), whose sum is σ = 236545920. Its totient is φ = 57164568.

The previous prime is 135684481. The next prime is 135684553. The reversal of 135684542 is 245486531.

It is a junction number, because it is equal to n+sod(n) for n = 135684496 and 135684505.

It is a congruent number.

It is an unprimeable number.

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, 81308 + ... + 82959.

It is an arithmetic number, because the mean of its divisors is an integer number (14784120).

Almost surely, 2^135684542 is an apocalyptic number.

135684542 is a deficient number, since it is larger than the sum of its proper divisors (100861378).

135684542 is a wasteful number, since it uses less digits than its factorization.

135684542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164335.

The product of its digits is 115200, while the sum is 38.

The square root of 135684542 is about 11648.3707873676. The cubic root of 135684542 is about 513.8583969017.

The spelling of 135684542 in words is "one hundred thirty-five million, six hundred eighty-four thousand, five hundred forty-two".