21142424130 has 32 divisors (see below), whose sum is σ = 50753257344. Its totient is φ = 5636708736.

The previous prime is 21142424099. The next prime is 21142424131. The reversal of 21142424130 is 3142424112.

It is a self number, because there is not a number n which added to its sum of digits gives 21142424130.

It is not an unprimeable number, because it can be changed into a prime (21142424131) 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 15 ways as a sum of consecutive naturals, for example, 59854 + ... + 214166.

It is an arithmetic number, because the mean of its divisors is an integer number (1586039292).

Almost surely, 2^21142424130 is an apocalyptic number.

21142424130 is an abundant number, since it is smaller than the sum of its proper divisors (29610833214).

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

21142424130 is a wasteful number, since it uses less digits than its factorization.

21142424130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158890.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21142424130 its reverse (3142424112), we get a palindrome (24284848242).

The spelling of 21142424130 in words is "twenty-one billion, one hundred forty-two million, four hundred twenty-four thousand, one hundred thirty".