42955787 has 8 divisors (see below), whose sum is σ = 51980256. Its totient is φ = 34653312.

The previous prime is 42955769. The next prime is 42955813. The reversal of 42955787 is 78755924.

It is a happy number.

42955787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42955787 - 2⁶ = 42955723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42955687) by changing a digit.

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, 180368 + ... + 180605.

It is an arithmetic number, because the mean of its divisors is an integer number (6497532).

Almost surely, 2^42955787 is an apocalyptic number.

42955787 is a deficient number, since it is larger than the sum of its proper divisors (9024469).

42955787 is a wasteful number, since it uses less digits than its factorization.

42955787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360997.

The product of its digits is 705600, while the sum is 47.

The square root of 42955787 is about 6554.0664476339. The cubic root of 42955787 is about 350.2196906455.

The spelling of 42955787 in words is "forty-two million, nine hundred fifty-five thousand, seven hundred eighty-seven".