1123421393 has 2 divisors, whose sum is σ = 1123421394. Its totient is φ = 1123421392.

The previous prime is 1123421381. The next prime is 1123421413. The reversal of 1123421393 is 3931243211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1116361744 + 7059649 = 33412^2 + 2657^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123421393 - 2⁶ = 1123421329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123426393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561710696 + 561710697.

It is an arithmetic number, because the mean of its divisors is an integer number (561710697).

Almost surely, 2^1123421393 is an apocalyptic number.

It is an amenable number.

1123421393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123421393 is an equidigital number, since it uses as much as digits as its factorization.

1123421393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The square root of 1123421393 is about 33517.4789177229. The cubic root of 1123421393 is about 1039.5552193846. Note that the first 3 decimals are identical.

The spelling of 1123421393 in words is "one billion, one hundred twenty-three million, four hundred twenty-one thousand, three hundred ninety-three".