42102122321 has 8 divisors (see below), whose sum is σ = 48118712064. Its totient is φ = 36086032800.

The previous prime is 42102122317. The next prime is 42102122341. The reversal of 42102122321 is 12322120124.

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

It is a cyclic number.

It is not a de Polignac number, because 42102122321 - 2² = 42102122317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42102122293 and 42102122302.

It is not an unprimeable number, because it can be changed into a prime (42102122341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77096 + ... + 300246.

It is an arithmetic number, because the mean of its divisors is an integer number (6014839008).

Almost surely, 2^42102122321 is an apocalyptic number.

It is an amenable number.

42102122321 is a deficient number, since it is larger than the sum of its proper divisors (6016589743).

42102122321 is a wasteful number, since it uses less digits than its factorization.

42102122321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250111.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 42102122321 its reverse (12322120124), we get a palindrome (54424242445).

The spelling of 42102122321 in words is "forty-two billion, one hundred two million, one hundred twenty-two thousand, three hundred twenty-one".