442518122141509 has 2 divisors, whose sum is σ = 442518122141510. Its totient is φ = 442518122141508.

The previous prime is 442518122141429. The next prime is 442518122141617. The reversal of 442518122141509 is 905141221815244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 416297833810884 + 26220288330625 = 20403378^2 + 5120575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442518122141509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442518122144509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221259061070754 + 221259061070755.

It is an arithmetic number, because the mean of its divisors is an integer number (221259061070755).

Almost surely, 2^{442518122141509} is an apocalyptic number.

It is an amenable number.

442518122141509 is a deficient number, since it is larger than the sum of its proper divisors (1).

442518122141509 is an equidigital number, since it uses as much as digits as its factorization.

442518122141509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 921600, while the sum is 49.

The spelling of 442518122141509 in words is "four hundred forty-two trillion, five hundred eighteen billion, one hundred twenty-two million, one hundred forty-one thousand, five hundred nine".