42044441 has 2 divisors, whose sum is σ = 42044442. Its totient is φ = 42044440.

The previous prime is 42044419. The next prime is 42044447. The reversal of 42044441 is 14444024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23078416 + 18966025 = 4804^2 + 4355^2 .

It is a cyclic number.

It is not a de Polignac number, because 42044441 - 2⁶ = 42044377 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (42044447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21022220 + 21022221.

It is an arithmetic number, because the mean of its divisors is an integer number (21022221).

Almost surely, 2^42044441 is an apocalyptic number.

It is an amenable number.

42044441 is a deficient number, since it is larger than the sum of its proper divisors (1).

42044441 is an equidigital number, since it uses as much as digits as its factorization.

42044441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 42044441 is about 6484.1684894827. The cubic root of 42044441 is about 347.7252229384.

Adding to 42044441 its reverse (14444024), we get a palindrome (56488465).

The spelling of 42044441 in words is "forty-two million, forty-four thousand, four hundred forty-one".