42905071 has 8 divisors (see below), whose sum is σ = 46935504. Its totient is φ = 38896320.

The previous prime is 42905069. The next prime is 42905081. The reversal of 42905071 is 17050924.

It is a happy number.

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 42905071 - 2¹ = 42905069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42905011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1126 + ... + 9331.

It is an arithmetic number, because the mean of its divisors is an integer number (5866938).

Almost surely, 2^42905071 is an apocalyptic number.

42905071 is a deficient number, since it is larger than the sum of its proper divisors (4030433).

42905071 is a wasteful number, since it uses less digits than its factorization.

42905071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10841.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 42905071 is about 6550.1962566018. The cubic root of 42905071 is about 350.0818067279.

Adding to 42905071 its reverse (17050924), we get a palindrome (59955995).

The spelling of 42905071 in words is "forty-two million, nine hundred five thousand, seventy-one".