43542479 has 2 divisors, whose sum is σ = 43542480. Its totient is φ = 43542478.

The previous prime is 43542467. The next prime is 43542493. The reversal of 43542479 is 97424534.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43542479 - 2¹⁶ = 43476943 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43542409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21771239 + 21771240.

It is an arithmetic number, because the mean of its divisors is an integer number (21771240).

Almost surely, 2^43542479 is an apocalyptic number.

43542479 is a deficient number, since it is larger than the sum of its proper divisors (1).

43542479 is an equidigital number, since it uses as much as digits as its factorization.

43542479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 38.

The square root of 43542479 is about 6598.6725180145. The cubic root of 43542479 is about 351.8069248278.

The spelling of 43542479 in words is "forty-three million, five hundred forty-two thousand, four hundred seventy-nine".