1131120424 has 64 divisors (see below), whose sum is σ = 2484264960. Its totient is φ = 472754880.

The previous prime is 1131120409. The next prime is 1131120439. The reversal of 1131120424 is 4240211311.

It is an interprime number because it is at equal distance from previous prime (1131120409) and next prime (1131120439).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 965359 + ... + 966529.

It is an arithmetic number, because the mean of its divisors is an integer number (38816640).

Almost surely, 2^1131120424 is an apocalyptic number.

1131120424 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 1131120424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1242132480).

1131120424 is an abundant number, since it is smaller than the sum of its proper divisors (1353144536).

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

1131120424 is a wasteful number, since it uses less digits than its factorization.

1131120424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598 (or 1594 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1131120424 is about 33632.1338008756. The cubic root of 1131120424 is about 1041.9245748360.

Adding to 1131120424 its reverse (4240211311), we get a palindrome (5371331735).

The spelling of 1131120424 in words is "one billion, one hundred thirty-one million, one hundred twenty thousand, four hundred twenty-four".