21134320424042 has 32 divisors (see below), whose sum is σ = 36352160836992. Its totient is φ = 9027097890624.

The previous prime is 21134320423999. The next prime is 21134320424057. The reversal of 21134320424042 is 24042402343112.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40714928 + ... + 41230740.

It is an arithmetic number, because the mean of its divisors is an integer number (1136005026156).

Almost surely, 2^{21134320424042} is an apocalyptic number.

21134320424042 is a deficient number, since it is larger than the sum of its proper divisors (15217840412950).

21134320424042 is a wasteful number, since it uses less digits than its factorization.

21134320424042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525662.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 21134320424042 its reverse (24042402343112), we get a palindrome (45176722767154).

The spelling of 21134320424042 in words is "twenty-one trillion, one hundred thirty-four billion, three hundred twenty million, four hundred twenty-four thousand, forty-two".