21410230420 has 12 divisors (see below), whose sum is σ = 44961483924. Its totient is φ = 8564092160.

The previous prime is 21410230343. The next prime is 21410230451. The reversal of 21410230420 is 2403201412.

It can be written as a sum of positive squares in 2 ways, for example, as 3440291716 + 17969938704 = 58654^2 + 134052^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535255741 + ... + 535255780.

It is an arithmetic number, because the mean of its divisors is an integer number (3746790327).

Almost surely, 2^21410230420 is an apocalyptic number.

21410230420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21410230420 is an abundant number, since it is smaller than the sum of its proper divisors (23551253504).

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

21410230420 is a wasteful number, since it uses less digits than its factorization.

21410230420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070511530 (or 1070511528 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21410230420 its reverse (2403201412), we get a palindrome (23813431832).

The spelling of 21410230420 in words is "twenty-one billion, four hundred ten million, two hundred thirty thousand, four hundred twenty".