21140414043042 has 64 divisors (see below), whose sum is σ = 50422545137664. Its totient is φ = 5777425621440.

The previous prime is 21140414043041. The next prime is 21140414043059. The reversal of 21140414043042 is 24034041404112.

It is a happy number.

It is a super-2 number, since 2×21140414043042² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21140414043041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124588143 + ... + 124757709.

It is an arithmetic number, because the mean of its divisors is an integer number (787852267776).

Almost surely, 2^{21140414043042} is an apocalyptic number.

21140414043042 is an abundant number, since it is smaller than the sum of its proper divisors (29282131094622).

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

21140414043042 is a wasteful number, since it uses less digits than its factorization.

21140414043042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298663.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 21140414043042 its reverse (24034041404112), we get a palindrome (45174455447154).

The spelling of 21140414043042 in words is "twenty-one trillion, one hundred forty billion, four hundred fourteen million, forty-three thousand, forty-two".