42437903 has 2 divisors, whose sum is σ = 42437904. Its totient is φ = 42437902.

The previous prime is 42437891. The next prime is 42437909. The reversal of 42437903 is 30973424.

42437903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42437903 - 2¹⁶ = 42372367 is a prime.

It is a super-2 number, since 2×42437903² = 3601951222074818, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42437903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42437909) 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, 21218951 + 21218952.

It is an arithmetic number, because the mean of its divisors is an integer number (21218952).

Almost surely, 2^42437903 is an apocalyptic number.

42437903 is a deficient number, since it is larger than the sum of its proper divisors (1).

42437903 is an equidigital number, since it uses as much as digits as its factorization.

42437903 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 32.

The square root of 42437903 is about 6514.4380417654. The cubic root of 42437903 is about 348.8065555776.

The spelling of 42437903 in words is "forty-two million, four hundred thirty-seven thousand, nine hundred three".