21142106334 has 24 divisors (see below), whose sum is σ = 45852802632. Its totient is φ = 7040460240.

The previous prime is 21142106329. The next prime is 21142106347. The reversal of 21142106334 is 43360124112.

It is a happy number.

21142106334 is a `hidden beast` number, since 2 + 1 + 1 + 4 + 21 + 0 + 633 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21142106298 and 21142106307.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 556824 + ... + 593579.

It is an arithmetic number, because the mean of its divisors is an integer number (1910533443).

Almost surely, 2^21142106334 is an apocalyptic number.

21142106334 is an abundant number, since it is smaller than the sum of its proper divisors (24710696298).

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

21142106334 is a wasteful number, since it uses less digits than its factorization.

21142106334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151432 (or 1151429 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 21142106334 in words is "twenty-one billion, one hundred forty-two million, one hundred six thousand, three hundred thirty-four".