1126603421 has 2 divisors, whose sum is σ = 1126603422. Its totient is φ = 1126603420.

The previous prime is 1126603381. The next prime is 1126603433. The reversal of 1126603421 is 1243066211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1024896196 + 101707225 = 32014^2 + 10085^2 .

It is a cyclic number.

It is not a de Polignac number, because 1126603421 - 2¹⁸ = 1126341277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1126603441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563301710 + 563301711.

It is an arithmetic number, because the mean of its divisors is an integer number (563301711).

Almost surely, 2^1126603421 is an apocalyptic number.

It is an amenable number.

1126603421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1126603421 is an equidigital number, since it uses as much as digits as its factorization.

1126603421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1126603421 is about 33564.9135407795. The cubic root of 1126603421 is about 1040.5357880890.

Adding to 1126603421 its reverse (1243066211), we get a palindrome (2369669632).

The spelling of 1126603421 in words is "one billion, one hundred twenty-six million, six hundred three thousand, four hundred twenty-one".