74203102321 has 2 divisors, whose sum is σ = 74203102322. Its totient is φ = 74203102320.

The previous prime is 74203102319. The next prime is 74203102331. The reversal of 74203102321 is 12320130247.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69013917025 + 5189185296 = 262705^2 + 72036^2 .

It is a cyclic number.

It is not a de Polignac number, because 74203102321 - 2¹ = 74203102319 is a prime.

It is a super-2 number, since 2×74203102321² (a number of 23 digits) contains 22 as substring.

Together with 74203102319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (74203102301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37101551160 + 37101551161.

It is an arithmetic number, because the mean of its divisors is an integer number (37101551161).

Almost surely, 2^74203102321 is an apocalyptic number.

It is an amenable number.

74203102321 is a deficient number, since it is larger than the sum of its proper divisors (1).

74203102321 is an equidigital number, since it uses as much as digits as its factorization.

74203102321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

Adding to 74203102321 its reverse (12320130247), we get a palindrome (86523232568).

The spelling of 74203102321 in words is "seventy-four billion, two hundred three million, one hundred two thousand, three hundred twenty-one".