42242145551 has 2 divisors, whose sum is σ = 42242145552. Its totient is φ = 42242145550.

The previous prime is 42242145497. The next prime is 42242145559. The reversal of 42242145551 is 15554124224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42242145551 - 2⁶ = 42242145487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42242145559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21121072775 + 21121072776.

It is an arithmetic number, because the mean of its divisors is an integer number (21121072776).

Almost surely, 2^42242145551 is an apocalyptic number.

42242145551 is a deficient number, since it is larger than the sum of its proper divisors (1).

42242145551 is an equidigital number, since it uses as much as digits as its factorization.

42242145551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64000, while the sum is 35.

Adding to 42242145551 its reverse (15554124224), we get a palindrome (57796269775).

The spelling of 42242145551 in words is "forty-two billion, two hundred forty-two million, one hundred forty-five thousand, five hundred fifty-one".