42143452321 has 16 divisors (see below), whose sum is σ = 43942953600. Its totient is φ = 40385027200.

The previous prime is 42143452313. The next prime is 42143452327. The reversal of 42143452321 is 12325434124.

42143452321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42143452321 - 2³ = 42143452313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42143452327) 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, 756150 + ... + 809968.

It is an arithmetic number, because the mean of its divisors is an integer number (2746434600).

Almost surely, 2^42143452321 is an apocalyptic number.

42143452321 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

42143452321 is a deficient number, since it is larger than the sum of its proper divisors (1799501279).

42143452321 is a wasteful number, since it uses less digits than its factorization.

42143452321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54200.

The product of its digits is 23040, while the sum is 31.

Adding to 42143452321 its reverse (12325434124), we get a palindrome (54468886445).

The spelling of 42143452321 in words is "forty-two billion, one hundred forty-three million, four hundred fifty-two thousand, three hundred twenty-one".