1123140455 has 4 divisors (see below), whose sum is σ = 1347768552. Its totient is φ = 898512360.

The previous prime is 1123140443. The next prime is 1123140467. The reversal of 1123140455 is 5540413211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5540413211 = 109 ⋅50829479.

It is an interprime number because it is at equal distance from previous prime (1123140443) and next prime (1123140467).

It is not a de Polignac number, because 1123140455 - 2¹⁶ = 1123074919 is a prime.

It is a super-2 number, since 2×1123140455² = 2522888963315214050, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 112314041 + ... + 112314050.

It is an arithmetic number, because the mean of its divisors is an integer number (336942138).

Almost surely, 2^1123140455 is an apocalyptic number.

1123140455 is a deficient number, since it is larger than the sum of its proper divisors (224628097).

1123140455 is an equidigital number, since it uses as much as digits as its factorization.

1123140455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224628096.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1123140455 is about 33513.2877378511. The cubic root of 1123140455 is about 1039.4685570647.

Adding to 1123140455 its reverse (5540413211), we get a palindrome (6663553666).

The spelling of 1123140455 in words is "one billion, one hundred twenty-three million, one hundred forty thousand, four hundred fifty-five".