42101321 has 8 divisors (see below), whose sum is σ = 44392320. Its totient is φ = 39817872.

The previous prime is 42101309. The next prime is 42101327. The reversal of 42101321 is 12310124.

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 42101321 - 2¹⁸ = 41839177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42101296 and 42101305.

It is not an unprimeable number, because it can be changed into a prime (42101327) 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, 12416 + ... + 15438.

It is an arithmetic number, because the mean of its divisors is an integer number (5549040).

Almost surely, 2^42101321 is an apocalyptic number.

It is an amenable number.

42101321 is a deficient number, since it is larger than the sum of its proper divisors (2290999).

42101321 is a wasteful number, since it uses less digits than its factorization.

42101321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3775.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 42101321 is about 6488.5530744535. The cubic root of 42101321 is about 347.8819594591.

Adding to 42101321 its reverse (12310124), we get a palindrome (54411445).

The spelling of 42101321 in words is "forty-two million, one hundred one thousand, three hundred twenty-one".