21126143062642 has 8 divisors (see below), whose sum is σ = 31855126712832. Its totient is φ = 10507767491700.

The previous prime is 21126143062613. The next prime is 21126143062657. The reversal of 21126143062642 is 24626034162112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21126143062595 and 21126143062604.

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 3 ways as a sum of consecutive naturals, for example, 27652019334 + ... + 27652020097.

It is an arithmetic number, because the mean of its divisors is an integer number (3981890839104).

Almost surely, 2^{21126143062642} is an apocalyptic number.

21126143062642 is a deficient number, since it is larger than the sum of its proper divisors (10728983650190).

21126143062642 is a wasteful number, since it uses less digits than its factorization.

21126143062642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55304039624.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 21126143062642 in words is "twenty-one trillion, one hundred twenty-six billion, one hundred forty-three million, sixty-two thousand, six hundred forty-two".