135257642 has 16 divisors (see below), whose sum is σ = 219808512. Its totient is φ = 62050800.

The previous prime is 135257621. The next prime is 135257659. The reversal of 135257642 is 246752531.

135257642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 11234 + ... + 19917.

It is an arithmetic number, because the mean of its divisors is an integer number (13738032).

Almost surely, 2^135257642 is an apocalyptic number.

135257642 is a deficient number, since it is larger than the sum of its proper divisors (84550870).

135257642 is a wasteful number, since it uses less digits than its factorization.

135257642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31333.

The product of its digits is 50400, while the sum is 35.

The square root of 135257642 is about 11630.0319002142. The cubic root of 135257642 is about 513.3189185623.

The spelling of 135257642 in words is "one hundred thirty-five million, two hundred fifty-seven thousand, six hundred forty-two".