2004121397 has 2 divisors, whose sum is σ = 2004121398. Its totient is φ = 2004121396.

The previous prime is 2004121373. The next prime is 2004121423. The reversal of 2004121397 is 7931214002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1224930001 + 779191396 = 34999^2 + 27914^2 .

It is a cyclic number.

It is not a de Polignac number, because 2004121397 - 2⁶ = 2004121333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2004121337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002060698 + 1002060699.

It is an arithmetic number, because the mean of its divisors is an integer number (1002060699).

Almost surely, 2^2004121397 is an apocalyptic number.

It is an amenable number.

2004121397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2004121397 is an equidigital number, since it uses as much as digits as its factorization.

2004121397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 2004121397 is about 44767.4144551592. The cubic root of 2004121397 is about 1260.7858952440.

Adding to 2004121397 its reverse (7931214002), we get a palindrome (9935335399).

The spelling of 2004121397 in words is "two billion, four million, one hundred twenty-one thousand, three hundred ninety-seven".