442240135 has 8 divisors (see below), whose sum is σ = 532027296. Its totient is φ = 352899360.

The previous prime is 442240121. The next prime is 442240151. The reversal of 442240135 is 531042244.

It is a happy number.

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

It is not a de Polignac number, because 442240135 - 2¹³ = 442231943 is a prime.

It is a Duffinian number.

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, 109411 + ... + 113380.

It is an arithmetic number, because the mean of its divisors is an integer number (66503412).

Almost surely, 2^442240135 is an apocalyptic number.

442240135 is a deficient number, since it is larger than the sum of its proper divisors (89787161).

442240135 is a wasteful number, since it uses less digits than its factorization.

442240135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223193.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 442240135 is about 21029.5062947279. The cubic root of 442240135 is about 761.8790845907.

Adding to 442240135 its reverse (531042244), we get a palindrome (973282379).

The spelling of 442240135 in words is "four hundred forty-two million, two hundred forty thousand, one hundred thirty-five".