42103142321 has 4 divisors (see below), whose sum is σ = 44319097200. Its totient is φ = 39887187444.

The previous prime is 42103142309. The next prime is 42103142377. The reversal of 42103142321 is 12324130124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42103142321 - 2¹⁴ = 42103125937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42103147321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1107977411 + ... + 1107977448.

It is an arithmetic number, because the mean of its divisors is an integer number (11079774300).

Almost surely, 2^42103142321 is an apocalyptic number.

It is an amenable number.

42103142321 is a deficient number, since it is larger than the sum of its proper divisors (2215954879).

42103142321 is a wasteful number, since it uses less digits than its factorization.

42103142321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215954878.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 42103142321 its reverse (12324130124), we get a palindrome (54427272445).

The spelling of 42103142321 in words is "forty-two billion, one hundred three million, one hundred forty-two thousand, three hundred twenty-one".