421504012312340 has 48 divisors (see below), whose sum is σ = 889661131817472. Its totient is φ = 167744853768576.

The previous prime is 421504012312307. The next prime is 421504012312391. The reversal of 421504012312340 is 43213210405124.

It is a junction number, because it is equal to n+sod(n) for n = 421504012312297 and 421504012312306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20911799 + ... + 35781438.

It is an arithmetic number, because the mean of its divisors is an integer number (18534606912864).

Almost surely, 2^{421504012312340} is an apocalyptic number.

It is an amenable number.

421504012312340 is an abundant number, since it is smaller than the sum of its proper divisors (468157119505132).

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

421504012312340 is a wasteful number, since it uses less digits than its factorization.

421504012312340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56695136 (or 56695134 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 421504012312340 its reverse (43213210405124), we get a palindrome (464717222717464).

The spelling of 421504012312340 in words is "four hundred twenty-one trillion, five hundred four billion, twelve million, three hundred twelve thousand, three hundred forty".