21114240142 has 16 divisors (see below), whose sum is σ = 33747984720. Its totient is φ = 9872823168.

The previous prime is 21114240127. The next prime is 21114240149. The reversal of 21114240142 is 24104241112.

It is a super-2 number, since 2×21114240142² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114240149) 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 7 ways as a sum of consecutive naturals, for example, 1972392 + ... + 1983067.

It is an arithmetic number, because the mean of its divisors is an integer number (2109249045).

Almost surely, 2^21114240142 is an apocalyptic number.

21114240142 is a deficient number, since it is larger than the sum of its proper divisors (12633744578).

21114240142 is a wasteful number, since it uses less digits than its factorization.

21114240142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3955635.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 21114240142 its reverse (24104241112), we get a palindrome (45218481254).

The spelling of 21114240142 in words is "twenty-one billion, one hundred fourteen million, two hundred forty thousand, one hundred forty-two".