21142104230 has 48 divisors (see below), whose sum is σ = 43535817360. Its totient is φ = 7347107328.

The previous prime is 21142104211. The next prime is 21142104257. The reversal of 21142104230 is 3240124112.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 243800 + ... + 318939.

It is an arithmetic number, because the mean of its divisors is an integer number (906996195).

Almost surely, 2^21142104230 is an apocalyptic number.

21142104230 is an abundant number, since it is smaller than the sum of its proper divisors (22393713130).

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

21142104230 is a wasteful number, since it uses less digits than its factorization.

21142104230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562793 (or 562776 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21142104230 its reverse (3240124112), we get a palindrome (24382228342).

The spelling of 21142104230 in words is "twenty-one billion, one hundred forty-two million, one hundred four thousand, two hundred thirty".