1123126455 has 32 divisors (see below), whose sum is σ = 2045606400. Its totient is φ = 520868480.

The previous prime is 1123126447. The next prime is 1123126457. The reversal of 1123126455 is 5546213211.

It is not a de Polignac number, because 1123126455 - 2³ = 1123126447 is a prime.

It is a super-2 number, since 2×1123126455² = 2522826067841734050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123126457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144180 + ... + 151769.

It is an arithmetic number, because the mean of its divisors is an integer number (63925200).

Almost surely, 2^1123126455 is an apocalyptic number.

1123126455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1123126455 is a deficient number, since it is larger than the sum of its proper divisors (922479945).

1123126455 is a wasteful number, since it uses less digits than its factorization.

1123126455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295991.

The product of its digits is 7200, while the sum is 30.

The square root of 1123126455 is about 33513.0788648253. The cubic root of 1123126455 is about 1039.4642380382.

Adding to 1123126455 its reverse (5546213211), we get a palindrome (6669339666).

The spelling of 1123126455 in words is "one billion, one hundred twenty-three million, one hundred twenty-six thousand, four hundred fifty-five".