20034142321 has 2 divisors, whose sum is σ = 20034142322. Its totient is φ = 20034142320.

The previous prime is 20034142153. The next prime is 20034142327. The reversal of 20034142321 is 12324143002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20032439296 + 1703025 = 141536^2 + 1305^2 .

It is a cyclic number.

It is not a de Polignac number, because 20034142321 - 2¹³ = 20034134129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20034142292 and 20034142301.

It is not a weakly prime, because it can be changed into another prime (20034142327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10017071160 + 10017071161.

It is an arithmetic number, because the mean of its divisors is an integer number (10017071161).

Almost surely, 2^20034142321 is an apocalyptic number.

It is an amenable number.

20034142321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20034142321 is an equidigital number, since it uses as much as digits as its factorization.

20034142321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20034142321 its reverse (12324143002), we get a palindrome (32358285323).

The spelling of 20034142321 in words is "twenty billion, thirty-four million, one hundred forty-two thousand, three hundred twenty-one".