421523213301342 has 96 divisors (see below), whose sum is σ = 970827181758720. Its totient is φ = 131807409252480.

The previous prime is 421523213301331. The next prime is 421523213301343. The reversal of 421523213301342 is 243103312325124.

421523213301342 is a `hidden beast` number, since 4 + 2 + 1 + 5 + 2 + 3 + 2 + 1 + 3 + 301 + 342 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 421523213301297 and 421523213301306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421523213301343) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10180663 + ... + 30768365.

It is an arithmetic number, because the mean of its divisors is an integer number (10112783143320).

Almost surely, 2^{421523213301342} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421523213301342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (485413590879360).

421523213301342 is an abundant number, since it is smaller than the sum of its proper divisors (549303968457378).

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

421523213301342 is a wasteful number, since it uses less digits than its factorization.

421523213301342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20588318 (or 20588315 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 421523213301342 its reverse (243103312325124), we get a palindrome (664626525626466).

The spelling of 421523213301342 in words is "four hundred twenty-one trillion, five hundred twenty-three billion, two hundred thirteen million, three hundred one thousand, three hundred forty-two".