442051254224381 has 2 divisors, whose sum is σ = 442051254224382. Its totient is φ = 442051254224380.

The previous prime is 442051254224299. The next prime is 442051254224471. The reversal of 442051254224381 is 183422452150244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 422730253764025 + 19321000460356 = 20560405^2 + 4395566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442051254224381 is a prime.

It is a super-2 number, since 2×442051254224381² (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 (442051254224081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221025627112190 + 221025627112191.

It is an arithmetic number, because the mean of its divisors is an integer number (221025627112191).

Almost surely, 2^{442051254224381} is an apocalyptic number.

It is an amenable number.

442051254224381 is a deficient number, since it is larger than the sum of its proper divisors (1).

442051254224381 is an equidigital number, since it uses as much as digits as its factorization.

442051254224381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2457600, while the sum is 47.

The spelling of 442051254224381 in words is "four hundred forty-two trillion, fifty-one billion, two hundred fifty-four million, two hundred twenty-four thousand, three hundred eighty-one".