442423003243391 has 2 divisors, whose sum is σ = 442423003243392. Its totient is φ = 442423003243390.

The previous prime is 442423003243301. The next prime is 442423003243469. The reversal of 442423003243391 is 193342300324244.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442423003243391 is a prime.

It is a super-2 number, since 2×442423003243391² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442423003243301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221211501621695 + 221211501621696.

It is an arithmetic number, because the mean of its divisors is an integer number (221211501621696).

Almost surely, 2^{442423003243391} is an apocalyptic number.

442423003243391 is a deficient number, since it is larger than the sum of its proper divisors (1).

442423003243391 is an equidigital number, since it uses as much as digits as its factorization.

442423003243391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 44.

The spelling of 442423003243391 in words is "four hundred forty-two trillion, four hundred twenty-three billion, three million, two hundred forty-three thousand, three hundred ninety-one".