405340304140 has 48 divisors (see below), whose sum is σ = 854028407232. Its totient is φ = 161600495616.

The previous prime is 405340304113. The next prime is 405340304141. The reversal of 405340304140 is 41403043504.

It is a super-2 number, since 2×405340304140² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 405340304099 and 405340304108.

It is not an unprimeable number, because it can be changed into a prime (405340304141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24302844 + ... + 24319516.

It is an arithmetic number, because the mean of its divisors is an integer number (17792258484).

Almost surely, 2^405340304140 is an apocalyptic number.

It is an amenable number.

405340304140 is an abundant number, since it is smaller than the sum of its proper divisors (448688103092).

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

405340304140 is a wasteful number, since it uses less digits than its factorization.

405340304140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20626 (or 20624 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 405340304140 its reverse (41403043504), we get a palindrome (446743347644).

The spelling of 405340304140 in words is "four hundred five billion, three hundred forty million, three hundred four thousand, one hundred forty".