42403938 has 16 divisors (see below), whose sum is σ = 85683360. Its totient is φ = 13988736.

The previous prime is 42403937. The next prime is 42403951. The reversal of 42403938 is 83930424.

It is a junction number, because it is equal to n+sod(n) for n = 42403899 and 42403908.

It is not an unprimeable number, because it can be changed into a prime (42403937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35848 + ... + 37011.

It is an arithmetic number, because the mean of its divisors is an integer number (5355210).

Almost surely, 2^42403938 is an apocalyptic number.

42403938 is an abundant number, since it is smaller than the sum of its proper divisors (43279422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42403938 is a wasteful number, since it uses less digits than its factorization.

42403938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72961.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 42403938 is about 6511.8306181902. The cubic root of 42403938 is about 348.7134754468.

The spelling of 42403938 in words is "forty-two million, four hundred three thousand, nine hundred thirty-eight".