42079441 has 2 divisors, whose sum is σ = 42079442. Its totient is φ = 42079440.

The previous prime is 42079439. The next prime is 42079451. The reversal of 42079441 is 14497024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41216400 + 863041 = 6420^2 + 929^2 .

It is a cyclic number.

It is not a de Polignac number, because 42079441 - 2¹ = 42079439 is a prime.

Together with 42079439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42079421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21039720 + 21039721.

It is an arithmetic number, because the mean of its divisors is an integer number (21039721).

Almost surely, 2^42079441 is an apocalyptic number.

It is an amenable number.

42079441 is a deficient number, since it is larger than the sum of its proper divisors (1).

42079441 is an equidigital number, since it uses as much as digits as its factorization.

42079441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 42079441 is about 6486.8668091768. The cubic root of 42079441 is about 347.8216844205.

The spelling of 42079441 in words is "forty-two million, seventy-nine thousand, four hundred forty-one".