42102134211021 has 8 divisors (see below), whose sum is σ = 56136279810720. Its totient is φ = 28068039042672.

The previous prime is 42102134210989. The next prime is 42102134211107. The reversal of 42102134211021 is 12011243120124.

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

It is not a de Polignac number, because 42102134211021 - 2⁵ = 42102134210989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42102134210982 and 42102134211000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42102134210021) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10614870 + ... + 14031383.

It is an arithmetic number, because the mean of its divisors is an integer number (7017034976340).

Almost surely, 2^{42102134211021} is an apocalyptic number.

It is an amenable number.

42102134211021 is a deficient number, since it is larger than the sum of its proper divisors (14034145599699).

42102134211021 is a wasteful number, since it uses less digits than its factorization.

42102134211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25215675.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 42102134211021 its reverse (12011243120124), we get a palindrome (54113377331145).

The spelling of 42102134211021 in words is "forty-two trillion, one hundred two billion, one hundred thirty-four million, two hundred eleven thousand, twenty-one".