42656845 has 32 divisors (see below), whose sum is σ = 64509696. Its totient is φ = 26304000.

The previous prime is 42656839. The next prime is 42656849. The reversal of 42656845 is 54865624.

It is not a de Polignac number, because 42656845 - 2¹¹ = 42654797 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42656798 and 42656807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42656849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38337 + ... + 39433.

It is an arithmetic number, because the mean of its divisors is an integer number (2015928).

Almost surely, 2^42656845 is an apocalyptic number.

It is an amenable number.

42656845 is a deficient number, since it is larger than the sum of its proper divisors (21852851).

42656845 is a wasteful number, since it uses less digits than its factorization.

42656845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221.

The product of its digits is 230400, while the sum is 40.

The square root of 42656845 is about 6531.2207894084. The cubic root of 42656845 is about 349.4053712865.

The spelling of 42656845 in words is "forty-two million, six hundred fifty-six thousand, eight hundred forty-five".