21134143242 has 64 divisors (see below), whose sum is σ = 47226551040. Its totient is φ = 7005555648.

The previous prime is 21134143237. The next prime is 21134143253. The reversal of 21134143242 is 24234143112.

21134143242 is a `hidden beast` number, since 2 + 1 + 1 + 3 + 414 + 3 + 242 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 10125523 + ... + 10127609.

It is an arithmetic number, because the mean of its divisors is an integer number (737914860).

Almost surely, 2^21134143242 is an apocalyptic number.

21134143242 is an abundant number, since it is smaller than the sum of its proper divisors (26092407798).

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

21134143242 is a wasteful number, since it uses less digits than its factorization.

21134143242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052 (or 3046 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 21134143242 its reverse (24234143112), we get a palindrome (45368286354).

The spelling of 21134143242 in words is "twenty-one billion, one hundred thirty-four million, one hundred forty-three thousand, two hundred forty-two".