4021321040039 has 2 divisors, whose sum is σ = 4021321040040. Its totient is φ = 4021321040038.

The previous prime is 4021321040003. The next prime is 4021321040101. The reversal of 4021321040039 is 9300401231204.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4021321040039 is a prime.

It is a super-2 number, since 2×4021321040039² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4021321039993 and 4021321040020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021321043039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010660520019 + 2010660520020.

It is an arithmetic number, because the mean of its divisors is an integer number (2010660520020).

Almost surely, 2^{4021321040039} is an apocalyptic number.

4021321040039 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021321040039 is an equidigital number, since it uses as much as digits as its factorization.

4021321040039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 4021321040039 in words is "four trillion, twenty-one billion, three hundred twenty-one million, forty thousand, thirty-nine".