2130421232440 has 32 divisors (see below), whose sum is σ = 4800856560480. Its totient is φ = 850851375232.

The previous prime is 2130421232437. The next prime is 2130421232441. The reversal of 2130421232440 is 442321240312.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 2130421232399 and 2130421232408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130421232441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41133727 + ... + 41185486.

It is an arithmetic number, because the mean of its divisors is an integer number (150026767515).

Almost surely, 2^{2130421232440} is an apocalyptic number.

2130421232440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2130421232440 is an abundant number, since it is smaller than the sum of its proper divisors (2670435328040).

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

2130421232440 is a wasteful number, since it uses less digits than its factorization.

2130421232440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82319871 (or 82319867 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 2130421232440 its reverse (442321240312), we get a palindrome (2572742472752).

The spelling of 2130421232440 in words is "two trillion, one hundred thirty billion, four hundred twenty-one million, two hundred thirty-two thousand, four hundred forty".