42079013 has 2 divisors, whose sum is σ = 42079014. Its totient is φ = 42079012.

The previous prime is 42078989. The next prime is 42079031. The reversal of 42079013 is 31097024.

Together with next prime (42079031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22877089 + 19201924 = 4783^2 + 4382^2 .

It is a cyclic number.

It is not a de Polignac number, because 42079013 - 2²² = 37884709 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42079033) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21039506 + 21039507.

It is an arithmetic number, because the mean of its divisors is an integer number (21039507).

Almost surely, 2^42079013 is an apocalyptic number.

It is an amenable number.

42079013 is a deficient number, since it is larger than the sum of its proper divisors (1).

42079013 is an equidigital number, since it uses as much as digits as its factorization.

42079013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 42079013 is about 6486.8338193606. The cubic root of 42079013 is about 347.8205051575.

The spelling of 42079013 in words is "forty-two million, seventy-nine thousand, thirteen".