442144771426 has 16 divisors (see below), whose sum is σ = 670975538040. Its totient is φ = 218500352640.

The previous prime is 442144771423. The next prime is 442144771429. The reversal of 442144771426 is 624177441244.

It is an interprime number because it is at equal distance from previous prime (442144771423) and next prime (442144771429).

It can be written as a sum of positive squares in 4 ways, for example, as 420623588025 + 21521183401 = 648555^2 + 146701^2 .

It is not an unprimeable number, because it can be changed into a prime (442144771423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3460545 + ... + 3586036.

Almost surely, 2^442144771426 is an apocalyptic number.

442144771426 is a deficient number, since it is larger than the sum of its proper divisors (228830766614).

442144771426 is a wasteful number, since it uses less digits than its factorization.

442144771426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7046949.

The product of its digits is 1204224, while the sum is 46.

The spelling of 442144771426 in words is "four hundred forty-two billion, one hundred forty-four million, seven hundred seventy-one thousand, four hundred twenty-six".