402130001320 has 32 divisors (see below), whose sum is σ = 958015593000. Its totient is φ = 151390117888.

The previous prime is 402130001291. The next prime is 402130001327. The reversal of 402130001320 is 23100031204.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 349567102564 + 52562898756 = 591242^2 + 229266^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402130001294 and 402130001303.

It is not an unprimeable number, because it can be changed into a prime (402130001327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295683145 + ... + 295684504.

Almost surely, 2^402130001320 is an apocalyptic number.

402130001320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402130001320 is an abundant number, since it is smaller than the sum of its proper divisors (555885591680).

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

402130001320 is a wasteful number, since it uses less digits than its factorization.

402130001320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591367677 (or 591367673 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 402130001320 its reverse (23100031204), we get a palindrome (425230032524).

The spelling of 402130001320 in words is "four hundred two billion, one hundred thirty million, one thousand, three hundred twenty".