42400442003 has 4 divisors (see below), whose sum is σ = 43862526240. Its totient is φ = 40938357768.

The previous prime is 42400441987. The next prime is 42400442011. The reversal of 42400442003 is 30024400424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42400442003 - 2⁴ = 42400441987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42400442003.

It is not an unprimeable number, because it can be changed into a prime (42400442053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 731042075 + ... + 731042132.

It is an arithmetic number, because the mean of its divisors is an integer number (10965631560).

Almost surely, 2^42400442003 is an apocalyptic number.

42400442003 is a deficient number, since it is larger than the sum of its proper divisors (1462084237).

42400442003 is a wasteful number, since it uses less digits than its factorization.

42400442003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462084236.

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 42400442003 its reverse (30024400424), we get a palindrome (72424842427).

The spelling of 42400442003 in words is "forty-two billion, four hundred million, four hundred forty-two thousand, three".