135660742 has 16 divisors (see below), whose sum is σ = 235176480. Its totient is φ = 57486528.

The previous prime is 135660737. The next prime is 135660757. The reversal of 135660742 is 247066531.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 135660698 and 135660707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53193 + ... + 55684.

It is an arithmetic number, because the mean of its divisors is an integer number (14698530).

Almost surely, 2^135660742 is an apocalyptic number.

135660742 is a deficient number, since it is larger than the sum of its proper divisors (99515738).

135660742 is a wasteful number, since it uses less digits than its factorization.

135660742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108975.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 135660742 is about 11647.3491404697. The cubic root of 135660742 is about 513.8283503815.

The spelling of 135660742 in words is "one hundred thirty-five million, six hundred sixty thousand, seven hundred forty-two".