42028907 has 2 divisors, whose sum is σ = 42028908. Its totient is φ = 42028906.

The previous prime is 42028891. The next prime is 42028927. The reversal of 42028907 is 70982024.

42028907 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 42028907 - 2⁴ = 42028891 is a prime.

It is a super-2 number, since 2×42028907² = 3532858047229298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42028927) 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, 21014453 + 21014454.

It is an arithmetic number, because the mean of its divisors is an integer number (21014454).

Almost surely, 2^42028907 is an apocalyptic number.

42028907 is a deficient number, since it is larger than the sum of its proper divisors (1).

42028907 is an equidigital number, since it uses as much as digits as its factorization.

42028907 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 32.

The square root of 42028907 is about 6482.9705382641. The cubic root of 42028907 is about 347.6823934240.

The spelling of 42028907 in words is "forty-two million, twenty-eight thousand, nine hundred seven".