442420224013402 has 8 divisors (see below), whose sum is σ = 663635219904756. Its totient is φ = 221208484045152.

The previous prime is 442420224013399. The next prime is 442420224013433. The reversal of 442420224013402 is 204310422024244.

It can be written as a sum of positive squares in 2 ways, for example, as 442245716470321 + 174507543081 = 21029639^2 + 417741^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×442420224013402² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 813641043 + ... + 814184614.

Almost surely, 2^{442420224013402} is an apocalyptic number.

442420224013402 is a deficient number, since it is larger than the sum of its proper divisors (221214995891354).

442420224013402 is a wasteful number, since it uses less digits than its factorization.

442420224013402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627961552.

The product of its (nonzero) digits is 98304, while the sum is 34.

Adding to 442420224013402 its reverse (204310422024244), we get a palindrome (646730646037646).

The spelling of 442420224013402 in words is "four hundred forty-two trillion, four hundred twenty billion, two hundred twenty-four million, thirteen thousand, four hundred two".