42403343 has 2 divisors, whose sum is σ = 42403344. Its totient is φ = 42403342.

The previous prime is 42403331. The next prime is 42403379. The reversal of 42403343 is 34330424.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42403343 - 2⁴ = 42403327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42403313) 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 as a sum of consecutive naturals, namely, 21201671 + 21201672.

It is an arithmetic number, because the mean of its divisors is an integer number (21201672).

Almost surely, 2^42403343 is an apocalyptic number.

42403343 is a deficient number, since it is larger than the sum of its proper divisors (1).

42403343 is an equidigital number, since it uses as much as digits as its factorization.

42403343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 42403343 is about 6511.7849319522. The cubic root of 42403343 is about 348.7118444230.

Adding to 42403343 its reverse (34330424), we get a palindrome (76733767).

The spelling of 42403343 in words is "forty-two million, four hundred three thousand, three hundred forty-three".