442420230201021 has 12 divisors (see below), whose sum is σ = 639051653063772. Its totient is φ = 294946723469376.

The previous prime is 442420230200989. The next prime is 442420230201043. The reversal of 442420230201021 is 120102032024244.

It is a happy number.

442420230201021 is a `hidden beast` number, since 4 + 4 + 2 + 420 + 2 + 30 + 201 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 35875475868996 + 406544754332025 = 5989614^2 + 20162955^2 .

It is not a de Polignac number, because 442420230201021 - 2⁵ = 442420230200989 is a prime.

It is a super-2 number, since 2×442420230201021² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442420230201121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30791035 + ... + 42812711.

It is an arithmetic number, because the mean of its divisors is an integer number (53254304421981).

Almost surely, 2^{442420230201021} is an apocalyptic number.

It is an amenable number.

442420230201021 is a deficient number, since it is larger than the sum of its proper divisors (196631422862751).

442420230201021 is a wasteful number, since it uses less digits than its factorization.

442420230201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16110780 (or 16110777 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 442420230201021 its reverse (120102032024244), we get a palindrome (562522262225265).

The spelling of 442420230201021 in words is "four hundred forty-two trillion, four hundred twenty billion, two hundred thirty million, two hundred one thousand, twenty-one".