1131125454 has 48 divisors (see below), whose sum is σ = 2552472000. Its totient is φ = 361572288.

The previous prime is 1131125419. The next prime is 1131125519. The reversal of 1131125454 is 4545211311.

1131125454 is a `hidden beast` number, since 1 + 1 + 3 + 112 + 545 + 4 = 666.

It is a super-2 number, since 2×1131125454² = 2558889585373412232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70507 + ... + 85049.

It is an arithmetic number, because the mean of its divisors is an integer number (53176500).

Almost surely, 2^1131125454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131125454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1276236000).

1131125454 is an abundant number, since it is smaller than the sum of its proper divisors (1421346546).

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

1131125454 is a wasteful number, since it uses less digits than its factorization.

1131125454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14729 (or 14726 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 1131125454 is about 33632.2085804664. The cubic root of 1131125454 is about 1041.9261192848.

Adding to 1131125454 its reverse (4545211311), we get a palindrome (5676336765).

The spelling of 1131125454 in words is "one billion, one hundred thirty-one million, one hundred twenty-five thousand, four hundred fifty-four".