421440043212242 has 16 divisors (see below), whose sum is σ = 646867552908192. Its totient is φ = 205817617867680.

The previous prime is 421440043212239. The next prime is 421440043212283. The reversal of 421440043212242 is 242212340044124.

It is a super-2 number, since 2×421440043212242² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13865708 + ... + 32173559.

It is an arithmetic number, because the mean of its divisors is an integer number (40429222056762).

Almost surely, 2^{421440043212242} is an apocalyptic number.

421440043212242 is a deficient number, since it is larger than the sum of its proper divisors (225427509695950).

421440043212242 is a wasteful number, since it uses less digits than its factorization.

421440043212242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46145753.

The product of its (nonzero) digits is 98304, while the sum is 35.

Adding to 421440043212242 its reverse (242212340044124), we get a palindrome (663652383256366).

The spelling of 421440043212242 in words is "four hundred twenty-one trillion, four hundred forty billion, forty-three million, two hundred twelve thousand, two hundred forty-two".