2045004000421 has 2 divisors, whose sum is σ = 2045004000422. Its totient is φ = 2045004000420.

The previous prime is 2045004000343. The next prime is 2045004000437. The reversal of 2045004000421 is 1240004005402.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1454703744321 + 590300256100 = 1206111^2 + 768310^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045004000421 - 2¹⁵ = 2045003967653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2045004000392 and 2045004000401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2045004000451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022502000210 + 1022502000211.

It is an arithmetic number, because the mean of its divisors is an integer number (1022502000211).

Almost surely, 2^{2045004000421} is an apocalyptic number.

It is an amenable number.

2045004000421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045004000421 is an equidigital number, since it uses as much as digits as its factorization.

2045004000421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 2045004000421 its reverse (1240004005402), we get a palindrome (3285008005823).

The spelling of 2045004000421 in words is "two trillion, forty-five billion, four million, four hundred twenty-one", and thus it is an aban number.