42144230021903 has 2 divisors, whose sum is σ = 42144230021904. Its totient is φ = 42144230021902.

The previous prime is 42144230021879. The next prime is 42144230021911. The reversal of 42144230021903 is 30912003244124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42144230021903 is a prime.

It is a super-2 number, since 2×42144230021903² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42144230071903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21072115010951 + 21072115010952.

It is an arithmetic number, because the mean of its divisors is an integer number (21072115010952).

Almost surely, 2^{42144230021903} is an apocalyptic number.

42144230021903 is a deficient number, since it is larger than the sum of its proper divisors (1).

42144230021903 is an equidigital number, since it uses as much as digits as its factorization.

42144230021903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 42144230021903 in words is "forty-two trillion, one hundred forty-four billion, two hundred thirty million, twenty-one thousand, nine hundred three".