135942447 has 8 divisors (see below), whose sum is σ = 182116480. Its totient is φ = 90198360.

The previous prime is 135942439. The next prime is 135942467. The reversal of 135942447 is 744249531.

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

It is not a de Polignac number, because 135942447 - 2³ = 135942439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135942437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106747 + ... + 108012.

It is an arithmetic number, because the mean of its divisors is an integer number (22764560).

Almost surely, 2^135942447 is an apocalyptic number.

135942447 is a deficient number, since it is larger than the sum of its proper divisors (46174033).

135942447 is a wasteful number, since it uses less digits than its factorization.

135942447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214973.

The product of its digits is 120960, while the sum is 39.

The square root of 135942447 is about 11659.4359640593. The cubic root of 135942447 is about 514.1837662448.

The spelling of 135942447 in words is "one hundred thirty-five million, nine hundred forty-two thousand, four hundred forty-seven".