21424342410 has 48 divisors (see below), whose sum is σ = 55871655840. Its totient is φ = 5695889760.

The previous prime is 21424342333. The next prime is 21424342447. The reversal of 21424342410 is 1424342412.

21424342410 is a `hidden beast` number, since 2 + 1 + 4 + 243 + 4 + 2 + 410 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 329800 + ... + 389379.

It is an arithmetic number, because the mean of its divisors is an integer number (1163992830).

Almost surely, 2^21424342410 is an apocalyptic number.

21424342410 is an abundant number, since it is smaller than the sum of its proper divisors (34447313430).

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

21424342410 is a wasteful number, since it uses less digits than its factorization.

21424342410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719523 (or 719520 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 21424342410 its reverse (1424342412), we get a palindrome (22848684822).

The spelling of 21424342410 in words is "twenty-one billion, four hundred twenty-four million, three hundred forty-two thousand, four hundred ten".