1123421413 has 2 divisors, whose sum is σ = 1123421414. Its totient is φ = 1123421412.

The previous prime is 1123421393. The next prime is 1123421423. The reversal of 1123421413 is 3141243211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 930128004 + 193293409 = 30498^2 + 13903^2 .

It is an emirp because it is prime and its reverse (3141243211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123421413 - 2⁵ = 1123421381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123421423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561710706 + 561710707.

It is an arithmetic number, because the mean of its divisors is an integer number (561710707).

Almost surely, 2^1123421413 is an apocalyptic number.

It is an amenable number.

1123421413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123421413 is an equidigital number, since it uses as much as digits as its factorization.

1123421413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 22.

The square root of 1123421413 is about 33517.4792160747. The cubic root of 1123421413 is about 1039.5552255535. Note that the first 3 decimals are identical.

Adding to 1123421413 its reverse (3141243211), we get a palindrome (4264664624).

The spelling of 1123421413 in words is "one billion, one hundred twenty-three million, four hundred twenty-one thousand, four hundred thirteen".