1123214420 has 12 divisors (see below), whose sum is σ = 2358750324. Its totient is φ = 449285760.

The previous prime is 1123214383. The next prime is 1123214423. The reversal of 1123214420 is 244123211.

It can be written as a sum of positive squares in 2 ways, for example, as 800437264 + 322777156 = 28292^2 + 17966^2 .

It is a super-2 number, since 2×1123214420² = 2523221266591872800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 56160721 = 1123214420 / (1 + 1 + 2 + 3 + 2 + 1 + 4 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1123214392 and 1123214401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123214423) 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, 28080341 + ... + 28080380.

It is an arithmetic number, because the mean of its divisors is an integer number (196562527).

Almost surely, 2^1123214420 is an apocalyptic number.

1123214420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123214420 is an abundant number, since it is smaller than the sum of its proper divisors (1235535904).

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

1123214420 is a wasteful number, since it uses less digits than its factorization.

1123214420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56160730 (or 56160728 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1123214420 is about 33514.3912371984. The cubic root of 1123214420 is about 1039.4913748117.

Adding to 1123214420 its reverse (244123211), we get a palindrome (1367337631).

It can be divided in two parts, 11232 and 14420, that added together give a palindrome (25652).

The spelling of 1123214420 in words is "one billion, one hundred twenty-three million, two hundred fourteen thousand, four hundred twenty".