42657843 has 8 divisors (see below), whose sum is σ = 56928256. Its totient is φ = 28413000.

The previous prime is 42657833. The next prime is 42657851. The reversal of 42657843 is 34875624.

It is a happy number.

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

It is not a de Polignac number, because 42657843 - 2¹⁶ = 42592307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42657803) 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, 2083 + ... + 9468.

It is an arithmetic number, because the mean of its divisors is an integer number (7116032).

Almost surely, 2^42657843 is an apocalyptic number.

42657843 is a deficient number, since it is larger than the sum of its proper divisors (14270413).

42657843 is a wasteful number, since it uses less digits than its factorization.

42657843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12785.

The product of its digits is 161280, while the sum is 39.

The square root of 42657843 is about 6531.2971912171. The cubic root of 42657843 is about 349.4080961625.

The spelling of 42657843 in words is "forty-two million, six hundred fifty-seven thousand, eight hundred forty-three".