42943005 has 24 divisors (see below), whose sum is σ = 85068672. Its totient is φ = 19630944.

The previous prime is 42942989. The next prime is 42943009. The reversal of 42943005 is 50034924.

It is not a de Polignac number, because 42943005 - 2⁴ = 42942989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42943005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42943009) 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, 67849 + ... + 68478.

It is an arithmetic number, because the mean of its divisors is an integer number (3544528).

Almost surely, 2^42943005 is an apocalyptic number.

42943005 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42943005 is a deficient number, since it is larger than the sum of its proper divisors (42125667).

42943005 is a wasteful number, since it uses less digits than its factorization.

42943005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136345 (or 136342 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 42943005 is about 6553.0912552779. The cubic root of 42943005 is about 350.1849498691.

Adding to 42943005 its reverse (50034924), we get a palindrome (92977929).

It can be divided in two parts, 429 and 43005, that added together give a palindrome (43434).

The spelling of 42943005 in words is "forty-two million, nine hundred forty-three thousand, five".