42555843 has 24 divisors (see below), whose sum is σ = 67878720. Its totient is φ = 25475760.

The previous prime is 42555833. The next prime is 42555869. The reversal of 42555843 is 34855524.

It is a de Polignac number, because none of the positive numbers 2^k-42555843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42555798 and 42555807.

It is not an unprimeable number, because it can be changed into a prime (42555803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5628 + ... + 10806.

It is an arithmetic number, because the mean of its divisors is an integer number (2828280).

Almost surely, 2^42555843 is an apocalyptic number.

42555843 is a deficient number, since it is larger than the sum of its proper divisors (25322877).

42555843 is a wasteful number, since it uses less digits than its factorization.

42555843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5279 (or 5276 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The square root of 42555843 is about 6523.4839618106. The cubic root of 42555843 is about 349.1293817277.

The spelling of 42555843 in words is "forty-two million, five hundred fifty-five thousand, eight hundred forty-three".