42769543 has 2 divisors, whose sum is σ = 42769544. Its totient is φ = 42769542.

The previous prime is 42769511. The next prime is 42769567. The reversal of 42769543 is 34596724.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42769543 - 2⁵ = 42769511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42769496 and 42769505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42769583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21384771 + 21384772.

It is an arithmetic number, because the mean of its divisors is an integer number (21384772).

Almost surely, 2^42769543 is an apocalyptic number.

42769543 is a deficient number, since it is larger than the sum of its proper divisors (1).

42769543 is an equidigital number, since it uses as much as digits as its factorization.

42769543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 40.

The square root of 42769543 is about 6539.8427351122. The cubic root of 42769543 is about 349.7128065840.

The spelling of 42769543 in words is "forty-two million, seven hundred sixty-nine thousand, five hundred forty-three".