321420004000040 has 32 divisors (see below), whose sum is σ = 788940009819360. Its totient is φ = 116880001454400.

The previous prime is 321420004000037. The next prime is 321420004000091. The reversal of 321420004000040 is 40000400024123.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 321420003999976 and 321420004000021.

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, 365250004106 + ... + 365250004985.

It is an arithmetic number, because the mean of its divisors is an integer number (24654375306855).

Almost surely, 2^{321420004000040} is an apocalyptic number.

It is an amenable number.

321420004000040 is an abundant number, since it is smaller than the sum of its proper divisors (467520005819320).

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

321420004000040 is a wasteful number, since it uses less digits than its factorization.

321420004000040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730500009113 (or 730500009109 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 321420004000040 its reverse (40000400024123), we get a palindrome (361420404024163).

The spelling of 321420004000040 in words is "three hundred twenty-one trillion, four hundred twenty billion, four million, forty", and thus it is an aban number.