21410032340 has 12 divisors (see below), whose sum is σ = 44961067956. Its totient is φ = 8564012928.

The previous prime is 21410032331. The next prime is 21410032349. The reversal of 21410032340 is 4323001412.

It is an interprime number because it is at equal distance from previous prime (21410032331) and next prime (21410032349).

It can be written as a sum of positive squares in 2 ways, for example, as 10839724996 + 10570307344 = 104114^2 + 102812^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1070501617 = 21410032340 / (2 + 1 + 4 + 1 + 0 + 0 + 3 + 2 + 3 + 4 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21410032349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535250789 + ... + 535250828.

It is an arithmetic number, because the mean of its divisors is an integer number (3746755663).

Almost surely, 2^21410032340 is an apocalyptic number.

21410032340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21410032340 is an abundant number, since it is smaller than the sum of its proper divisors (23551035616).

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

21410032340 is a wasteful number, since it uses less digits than its factorization.

21410032340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070501626 (or 1070501624 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21410032340 its reverse (4323001412), we get a palindrome (25733033752).

The spelling of 21410032340 in words is "twenty-one billion, four hundred ten million, thirty-two thousand, three hundred forty".