135442542 has 8 divisors (see below), whose sum is σ = 270885096. Its totient is φ = 45147512.

The previous prime is 135442537. The next prime is 135442547. The reversal of 135442542 is 245244531.

It is an interprime number because it is at equal distance from previous prime (135442537) and next prime (135442547).

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

135442542 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135442547) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11286873 + ... + 11286884.

It is an arithmetic number, because the mean of its divisors is an integer number (33860637).

Almost surely, 2^135442542 is an apocalyptic number.

135442542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

135442542 is a wasteful number, since it uses less digits than its factorization.

135442542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22573762.

The product of its digits is 19200, while the sum is 30.

The square root of 135442542 is about 11637.9784327004. The cubic root of 135442542 is about 513.5527179254.

The spelling of 135442542 in words is "one hundred thirty-five million, four hundred forty-two thousand, five hundred forty-two".