42755109 has 8 divisors (see below), whose sum is σ = 57080352. Its totient is φ = 28466640.

The previous prime is 42755093. The next prime is 42755113. The reversal of 42755109 is 90155724.

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

It is not a de Polignac number, because 42755109 - 2⁴ = 42755093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42755109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42755509) 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, 6354 + ... + 11219.

It is an arithmetic number, because the mean of its divisors is an integer number (7135044).

Almost surely, 2^42755109 is an apocalyptic number.

It is an amenable number.

42755109 is a deficient number, since it is larger than the sum of its proper divisors (14325243).

42755109 is a wasteful number, since it uses less digits than its factorization.

42755109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18387.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 42755109 is about 6538.7390986336. The cubic root of 42755109 is about 349.6734614313.

The spelling of 42755109 in words is "forty-two million, seven hundred fifty-five thousand, one hundred nine".