42346543 has 2 divisors, whose sum is σ = 42346544. Its totient is φ = 42346542.

The previous prime is 42346531. The next prime is 42346559. The reversal of 42346543 is 34564324.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42346543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42346043) 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, 21173271 + 21173272.

It is an arithmetic number, because the mean of its divisors is an integer number (21173272).

Almost surely, 2^42346543 is an apocalyptic number.

42346543 is a deficient number, since it is larger than the sum of its proper divisors (1).

42346543 is an equidigital number, since it uses as much as digits as its factorization.

42346543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 31.

The square root of 42346543 is about 6507.4221470564. The cubic root of 42346543 is about 348.5560730317.

The spelling of 42346543 in words is "forty-two million, three hundred forty-six thousand, five hundred forty-three".