2043404261 has 2 divisors, whose sum is σ = 2043404262. Its totient is φ = 2043404260.

The previous prime is 2043404239. The next prime is 2043404263. The reversal of 2043404261 is 1624043402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1442860225 + 600544036 = 37985^2 + 24506^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043404261 - 2¹⁴ = 2043387877 is a prime.

It is a super-2 number, since 2×2043404261² = 8351001947745912242, which contains 22 as substring.

Together with 2043404263, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2043404261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2043404263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021702130 + 1021702131.

It is an arithmetic number, because the mean of its divisors is an integer number (1021702131).

Almost surely, 2^2043404261 is an apocalyptic number.

It is an amenable number.

2043404261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043404261 is an equidigital number, since it uses as much as digits as its factorization.

2043404261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 2043404261 is about 45204.0292562510. The cubic root of 2043404261 is about 1268.9702237831.

Adding to 2043404261 its reverse (1624043402), we get a palindrome (3667447663).

The spelling of 2043404261 in words is "two billion, forty-three million, four hundred four thousand, two hundred sixty-one".