42078003 has 16 divisors (see below), whose sum is σ = 62046336. Its totient is φ = 25151040.

The previous prime is 42077999. The next prime is 42078059. The reversal of 42078003 is 30087024.

It is not a de Polignac number, because 42078003 - 2² = 42077999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42078083) 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, 6325 + ... + 11142.

It is an arithmetic number, because the mean of its divisors is an integer number (3877896).

Almost surely, 2^42078003 is an apocalyptic number.

42078003 is a deficient number, since it is larger than the sum of its proper divisors (19968333).

42078003 is a wasteful number, since it uses less digits than its factorization.

42078003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17554.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 42078003 is about 6486.7559688954. The cubic root of 42078003 is about 347.8177222855.

The spelling of 42078003 in words is "forty-two million, seventy-eight thousand, three".