1123421433 has 4 divisors (see below), whose sum is σ = 1497895248. Its totient is φ = 748947620.

The previous prime is 1123421423. The next prime is 1123421437. The reversal of 1123421433 is 3341243211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3341243211 = 3 ⋅1113747737.

It is a cyclic number.

It is not a de Polignac number, because 1123421433 - 2²⁰ = 1122372857 is a prime.

It is a super-2 number, since 2×1123421433² = 2524151432247546978, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1123421437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187236903 + ... + 187236908.

It is an arithmetic number, because the mean of its divisors is an integer number (374473812).

Almost surely, 2^1123421433 is an apocalyptic number.

It is an amenable number.

1123421433 is a deficient number, since it is larger than the sum of its proper divisors (374473815).

1123421433 is an equidigital number, since it uses as much as digits as its factorization.

1123421433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374473814.

The product of its digits is 1728, while the sum is 24.

The square root of 1123421433 is about 33517.4795144265. The cubic root of 1123421433 is about 1039.5552317225. Note that the first 3 decimals are identical.

Adding to 1123421433 its reverse (3341243211), we get a palindrome (4464664644).

The spelling of 1123421433 in words is "one billion, one hundred twenty-three million, four hundred twenty-one thousand, four hundred thirty-three".