42094543 has 2 divisors, whose sum is σ = 42094544. Its totient is φ = 42094542.

The previous prime is 42094541. The next prime is 42094579. The reversal of 42094543 is 34549024.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42094543 - 2¹ = 42094541 is a prime.

Together with 42094541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42094541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21047271 + 21047272.

It is an arithmetic number, because the mean of its divisors is an integer number (21047272).

Almost surely, 2^42094543 is an apocalyptic number.

42094543 is a deficient number, since it is larger than the sum of its proper divisors (1).

42094543 is an equidigital number, since it uses as much as digits as its factorization.

42094543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 42094543 is about 6488.0307490024. The cubic root of 42094543 is about 347.8632896532.

The spelling of 42094543 in words is "forty-two million, ninety-four thousand, five hundred forty-three".