1123355245 has 16 divisors (see below), whose sum is σ = 1355312448. Its totient is φ = 893842560.

The previous prime is 1123355239. The next prime is 1123355251. The reversal of 1123355245 is 5425533211.

It is an interprime number because it is at equal distance from previous prime (1123355239) and next prime (1123355251).

It is not a de Polignac number, because 1123355245 - 2¹⁵ = 1123322477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1198417 + ... + 1199353.

It is an arithmetic number, because the mean of its divisors is an integer number (84707028).

Almost surely, 2^1123355245 is an apocalyptic number.

It is an amenable number.

1123355245 is a deficient number, since it is larger than the sum of its proper divisors (231957203).

1123355245 is an equidigital number, since it uses as much as digits as its factorization.

1123355245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980.

The product of its digits is 18000, while the sum is 31.

The square root of 1123355245 is about 33516.4921344702. The cubic root of 1123355245 is about 1039.5348156878.

Adding to 1123355245 its reverse (5425533211), we get a palindrome (6548888456).

It can be divided in two parts, 1123355 and 245, that added together give a square (1123600 = 1060²).

The spelling of 1123355245 in words is "one billion, one hundred twenty-three million, three hundred fifty-five thousand, two hundred forty-five".