42478940403 has 10 divisors (see below), whose sum is σ = 63456195044. Its totient is φ = 28319293548.

The previous prime is 42478940393. The next prime is 42478940407. The reversal of 42478940403 is 30404987424.

It is not a de Polignac number, because 42478940403 - 2¹⁰ = 42478939379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42478940407) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 262215601 + ... + 262215762.

Almost surely, 2^42478940403 is an apocalyptic number.

42478940403 is a deficient number, since it is larger than the sum of its proper divisors (20977254641).

42478940403 is an equidigital number, since it uses as much as digits as its factorization.

42478940403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524431375 (or 524431366 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 42478940403 in words is "forty-two billion, four hundred seventy-eight million, nine hundred forty thousand, four hundred three".