42784055 has 8 divisors (see below), whose sum is σ = 51397632. Its totient is φ = 34189408.

The previous prime is 42784039. The next prime is 42784069. The reversal of 42784055 is 55048724.

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

It is a cyclic number.

It is not a de Polignac number, because 42784055 - 2⁴ = 42784039 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 842 + ... + 9288.

It is an arithmetic number, because the mean of its divisors is an integer number (6424704).

Almost surely, 2^42784055 is an apocalyptic number.

42784055 is a deficient number, since it is larger than the sum of its proper divisors (8613577).

42784055 is a wasteful number, since it uses less digits than its factorization.

42784055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9465.

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 42784055 is about 6540.9521478146. The cubic root of 42784055 is about 349.7523554312.

The spelling of 42784055 in words is "forty-two million, seven hundred eighty-four thousand, fifty-five".