1123154140 has 24 divisors (see below), whose sum is σ = 2359254240. Its totient is φ = 449141568.

The previous prime is 1123154119. The next prime is 1123154161. The reversal of 1123154140 is 414513211.

It is an interprime number because it is at equal distance from previous prime (1123154119) and next prime (1123154161).

It is a super-2 number, since 2×1123154140² = 2522950444398279200, 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 7 ways as a sum of consecutive naturals, for example, 137614 + ... + 145546.

It is an arithmetic number, because the mean of its divisors is an integer number (98302260).

Almost surely, 2^1123154140 is an apocalyptic number.

1123154140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123154140 is an abundant number, since it is smaller than the sum of its proper divisors (1236100100).

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

1123154140 is a wasteful number, since it uses less digits than its factorization.

1123154140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15021 (or 15019 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1123154140 is about 33513.4919099756. The cubic root of 1123154140 is about 1039.4727788784.

Adding to 1123154140 its reverse (414513211), we get a palindrome (1537667351).

The spelling of 1123154140 in words is "one billion, one hundred twenty-three million, one hundred fifty-four thousand, one hundred forty".