42040007 has 2 divisors, whose sum is σ = 42040008. Its totient is φ = 42040006.

The previous prime is 42039967. The next prime is 42040051. The reversal of 42040007 is 70004024.

42040007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42040007 - 2¹² = 42035911 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 (42046007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21020003 + 21020004.

It is an arithmetic number, because the mean of its divisors is an integer number (21020004).

Almost surely, 2^42040007 is an apocalyptic number.

42040007 is a deficient number, since it is larger than the sum of its proper divisors (1).

42040007 is an equidigital number, since it uses as much as digits as its factorization.

42040007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 42040007 is about 6483.8265707836. The cubic root of 42040007 is about 347.7129988266.

The spelling of 42040007 in words is "forty-two million, forty thousand, seven".