42490907 has 2 divisors, whose sum is σ = 42490908. Its totient is φ = 42490906.

The previous prime is 42490849. The next prime is 42490927. The reversal of 42490907 is 70909424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42490907 - 2¹⁶ = 42425371 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42490927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21245453 + 21245454.

It is an arithmetic number, because the mean of its divisors is an integer number (21245454).

Almost surely, 2^42490907 is an apocalyptic number.

42490907 is a deficient number, since it is larger than the sum of its proper divisors (1).

42490907 is an equidigital number, since it uses as much as digits as its factorization.

42490907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 42490907 is about 6518.5049666315. The cubic root of 42490907 is about 348.9517123801.

The spelling of 42490907 in words is "forty-two million, four hundred ninety thousand, nine hundred seven".