42897705 has 8 divisors (see below), whose sum is σ = 68636352. Its totient is φ = 22878768.

The previous prime is 42897683. The next prime is 42897721. The reversal of 42897705 is 50779824.

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

It is not a de Polignac number, because 42897705 - 2²⁴ = 26120489 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1429909 + ... + 1429938.

It is an arithmetic number, because the mean of its divisors is an integer number (8579544).

Almost surely, 2^42897705 is an apocalyptic number.

It is an amenable number.

42897705 is a deficient number, since it is larger than the sum of its proper divisors (25738647).

42897705 is a wasteful number, since it uses less digits than its factorization.

42897705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2859855.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 42897705 is about 6549.6339592377. The cubic root of 42897705 is about 350.0617714103.

The spelling of 42897705 in words is "forty-two million, eight hundred ninety-seven thousand, seven hundred five".