42844003 has 2 divisors, whose sum is σ = 42844004. Its totient is φ = 42844002.

The previous prime is 42843979. The next prime is 42844013. The reversal of 42844003 is 30044824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42844003 - 2¹³ = 42835811 is a prime.

It is not a weakly prime, because it can be changed into another prime (42844013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21422001 + 21422002.

It is an arithmetic number, because the mean of its divisors is an integer number (21422002).

Almost surely, 2^42844003 is an apocalyptic number.

42844003 is a deficient number, since it is larger than the sum of its proper divisors (1).

42844003 is an equidigital number, since it uses as much as digits as its factorization.

42844003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 42844003 is about 6545.5330569786. The cubic root of 42844003 is about 349.9156340874.

Adding to 42844003 its reverse (30044824), we get a palindrome (72888827).

The spelling of 42844003 in words is "forty-two million, eight hundred forty-four thousand, three".