421440411401442 has 24 divisors (see below), whose sum is σ = 913365499308444. Its totient is φ = 140442505143264.

The previous prime is 421440411401441. The next prime is 421440411401479. The reversal of 421440411401442 is 244104114044124.

421440411401442 is a `hidden beast` number, since 4 + 21 + 4 + 40 + 411 + 40 + 144 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 420971048021241 + 469363380201 = 20517579^2 + 685101^2 .

It is a super-2 number, since 2×421440411401442² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421440411401397 and 421440411401406.

It is not an unprimeable number, because it can be changed into a prime (421440411401441) 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, 3135930153 + ... + 3136064540.

Almost surely, 2^{421440411401442} is an apocalyptic number.

421440411401442 is an abundant number, since it is smaller than the sum of its proper divisors (491925087907002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421440411401442 is a wasteful number, since it uses less digits than its factorization.

421440411401442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6271998434 (or 6271998431 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 36.

Adding to 421440411401442 its reverse (244104114044124), we get a palindrome (665544525445566).

The spelling of 421440411401442 in words is "four hundred twenty-one trillion, four hundred forty billion, four hundred eleven million, four hundred one thousand, four hundred forty-two".