42240903 has 16 divisors (see below), whose sum is σ = 62228736. Its totient is φ = 25351040.

The previous prime is 42240901. The next prime is 42240911. The reversal of 42240903 is 30904224.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42240903 - 2¹ = 42240901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42240901) 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 in 15 ways as a sum of consecutive naturals, for example, 16833 + ... + 19178.

It is an arithmetic number, because the mean of its divisors is an integer number (3889296).

Almost surely, 2^42240903 is an apocalyptic number.

42240903 is a deficient number, since it is larger than the sum of its proper divisors (19987833).

42240903 is a wasteful number, since it uses less digits than its factorization.

42240903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36054.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 42240903 is about 6499.3001930977. The cubic root of 42240903 is about 348.2659893365.

The spelling of 42240903 in words is "forty-two million, two hundred forty thousand, nine hundred three".