42103321 has 16 divisors (see below), whose sum is σ = 46889920. Its totient is φ = 37558080.

The previous prime is 42103309. The next prime is 42103337. The reversal of 42103321 is 12330124.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42103321 - 2¹¹ = 42101273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42103295 and 42103304.

It is not an unprimeable number, because it can be changed into a prime (42103361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60586 + ... + 61276.

It is an arithmetic number, because the mean of its divisors is an integer number (2930620).

Almost surely, 2^42103321 is an apocalyptic number.

It is an amenable number.

42103321 is a deficient number, since it is larger than the sum of its proper divisors (4786599).

42103321 is a wasteful number, since it uses less digits than its factorization.

42103321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 42103321 is about 6488.7071901882. The cubic root of 42103321 is about 347.8874680186.

Adding to 42103321 its reverse (12330124), we get a palindrome (54433445).

It can be divided in two parts, 42103 and 321, that added together give a palindrome (42424).

The spelling of 42103321 in words is "forty-two million, one hundred three thousand, three hundred twenty-one".