42545343 has 4 divisors (see below), whose sum is σ = 56727128. Its totient is φ = 28363560.

The previous prime is 42545297. The next prime is 42545357. The reversal of 42545343 is 34354524.

42545343 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-42545343 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 42545343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42545383) 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, 7090888 + ... + 7090893.

It is an arithmetic number, because the mean of its divisors is an integer number (14181782).

Almost surely, 2^42545343 is an apocalyptic number.

42545343 is a deficient number, since it is larger than the sum of its proper divisors (14181785).

42545343 is a wasteful number, since it uses less digits than its factorization.

42545343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14181784.

The product of its digits is 28800, while the sum is 30.

The square root of 42545343 is about 6522.6791274752. The cubic root of 42545343 is about 349.1006652633.

Adding to 42545343 its reverse (34354524), we get a palindrome (76899867).

The spelling of 42545343 in words is "forty-two million, five hundred forty-five thousand, three hundred forty-three".