1123111420 has 24 divisors (see below), whose sum is σ = 2439864000. Its totient is φ = 433753152.

The previous prime is 1123111411. The next prime is 1123111447. The reversal of 1123111420 is 241113211.

It is a super-2 number, since 2×1123111420² = 2522758523468832800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123111394 and 1123111403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 967620 + ... + 968779.

It is an arithmetic number, because the mean of its divisors is an integer number (101661000).

Almost surely, 2^1123111420 is an apocalyptic number.

1123111420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123111420 is an abundant number, since it is smaller than the sum of its proper divisors (1316752580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123111420 is a wasteful number, since it uses less digits than its factorization.

1123111420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936437 (or 1936435 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1123111420 is about 33512.8545486654. The cubic root of 1123111420 is about 1039.4595996722.

Adding to 1123111420 its reverse (241113211), we get a palindrome (1364224631).

The spelling of 1123111420 in words is "one billion, one hundred twenty-three million, one hundred eleven thousand, four hundred twenty".