402040413402440 has 32 divisors (see below), whose sum is σ = 904677986324160. Its totient is φ = 160800688708800.

The previous prime is 402040413402431. The next prime is 402040413402457. The reversal of 402040413402440 is 44204314040204.

It is a junction number, because it is equal to n+sod(n) for n = 402040413402397 and 402040413402406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 483224546 + ... + 484055825.

It is an arithmetic number, because the mean of its divisors is an integer number (28271187072630).

Almost surely, 2^{402040413402440} is an apocalyptic number.

402040413402440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402040413402440 is an abundant number, since it is smaller than the sum of its proper divisors (502637572921720).

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

402040413402440 is a wasteful number, since it uses less digits than its factorization.

402040413402440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967290773 (or 967290769 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 402040413402440 its reverse (44204314040204), we get a palindrome (446244727442644).

The spelling of 402040413402440 in words is "four hundred two trillion, forty billion, four hundred thirteen million, four hundred two thousand, four hundred forty".