42240843 has 6 divisors (see below), whose sum is σ = 61014564. Its totient is φ = 28160556.

The previous prime is 42240839. The next prime is 42240851. The reversal of 42240843 is 34804224.

It is a happy number.

It is not a de Polignac number, because 42240843 - 2² = 42240839 is a prime.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (42240823) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2346705 + ... + 2346722.

It is an arithmetic number, because the mean of its divisors is an integer number (10169094).

Almost surely, 2^42240843 is an apocalyptic number.

42240843 is a deficient number, since it is larger than the sum of its proper divisors (18773721).

42240843 is a wasteful number, since it uses less digits than its factorization.

42240843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4693433 (or 4693430 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 42240843 is about 6499.2955772145. The cubic root of 42240843 is about 348.2658244413.

The spelling of 42240843 in words is "forty-two million, two hundred forty thousand, eight hundred forty-three".