1121503124 has 96 divisors (see below), whose sum is σ = 2452665600. Its totient is φ = 437778432.

The previous prime is 1121503099. The next prime is 1121503127. The reversal of 1121503124 is 4213051211.

It is a junction number, because it is equal to n+sod(n) for n = 1121503096 and 1121503105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121503127) 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, 3213302 + ... + 3213650.

It is an arithmetic number, because the mean of its divisors is an integer number (25548600).

Almost surely, 2^1121503124 is an apocalyptic number.

1121503124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121503124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1226332800).

1121503124 is an abundant number, since it is smaller than the sum of its proper divisors (1331162476).

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

1121503124 is a wasteful number, since it uses less digits than its factorization.

1121503124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577 (or 575 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1121503124 is about 33488.8507417021. The cubic root of 1121503124 is about 1038.9631937923.

Adding to 1121503124 its reverse (4213051211), we get a palindrome (5334554335).

The spelling of 1121503124 in words is "one billion, one hundred twenty-one million, five hundred three thousand, one hundred twenty-four".