21410430420 has 48 divisors (see below), whose sum is σ = 61411387968. Its totient is φ = 5570192640.

The previous prime is 21410430407. The next prime is 21410430427. The reversal of 21410430420 is 2403401412.

It is a super-2 number, since 2×21410430420² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21410430427) 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 15 ways as a sum of consecutive naturals, for example, 4349254 + ... + 4354173.

It is an arithmetic number, because the mean of its divisors is an integer number (1279403916).

Almost surely, 2^21410430420 is an apocalyptic number.

21410430420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21410430420 is an abundant number, since it is smaller than the sum of its proper divisors (40000957548).

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

21410430420 is a wasteful number, since it uses less digits than its factorization.

21410430420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8703480 (or 8703478 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21410430420 its reverse (2403401412), we get a palindrome (23813831832).

The spelling of 21410430420 in words is "twenty-one billion, four hundred ten million, four hundred thirty thousand, four hundred twenty".