1123253421 has 8 divisors (see below), whose sum is σ = 1512500064. Its totient is φ = 741421200.

The previous prime is 1123253407. The next prime is 1123253429. The reversal of 1123253421 is 1243523211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1123253421 - 2⁵ = 1123253389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1123253391 and 1123253400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123253429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1853251 + ... + 1853856.

It is an arithmetic number, because the mean of its divisors is an integer number (189062508).

Almost surely, 2^1123253421 is an apocalyptic number.

It is an amenable number.

1123253421 is a deficient number, since it is larger than the sum of its proper divisors (389246643).

1123253421 is a wasteful number, since it uses less digits than its factorization.

1123253421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707211.

The product of its digits is 1440, while the sum is 24.

The square root of 1123253421 is about 33514.9730866668. The cubic root of 1123253421 is about 1039.5034059766.

Adding to 1123253421 its reverse (1243523211), we get a palindrome (2366776632).

The spelling of 1123253421 in words is "one billion, one hundred twenty-three million, two hundred fifty-three thousand, four hundred twenty-one".