42351843 has 4 divisors (see below), whose sum is σ = 56469128. Its totient is φ = 28234560.

The previous prime is 42351787. The next prime is 42351847. The reversal of 42351843 is 34815324.

42351843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-42351843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42351843.

It is not an unprimeable number, because it can be changed into a prime (42351847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7058638 + ... + 7058643.

It is an arithmetic number, because the mean of its divisors is an integer number (14117282).

Almost surely, 2^42351843 is an apocalyptic number.

42351843 is a deficient number, since it is larger than the sum of its proper divisors (14117285).

42351843 is a wasteful number, since it uses less digits than its factorization.

42351843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14117284.

The product of its digits is 11520, while the sum is 30.

The square root of 42351843 is about 6507.8293616228. The cubic root of 42351843 is about 348.5706139284.

The spelling of 42351843 in words is "forty-two million, three hundred fifty-one thousand, eight hundred forty-three".