1131120342 has 96 divisors (see below), whose sum is σ = 2776529280. Its totient is φ = 341074800.

The previous prime is 1131120337. The next prime is 1131120409. The reversal of 1131120342 is 2430211311.

1131120342 is a `hidden beast` number, since 11 + 311 + 2 + 0 + 342 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2162493 + ... + 2163015.

It is an arithmetic number, because the mean of its divisors is an integer number (28922180).

Almost surely, 2^1131120342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131120342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1388264640).

1131120342 is an abundant number, since it is smaller than the sum of its proper divisors (1645408938).

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

1131120342 is a wasteful number, since it uses less digits than its factorization.

1131120342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1131120342 is about 33632.1325818034. The cubic root of 1131120342 is about 1041.9245496581.

Adding to 1131120342 its reverse (2430211311), we get a palindrome (3561331653).

The spelling of 1131120342 in words is "one billion, one hundred thirty-one million, one hundred twenty thousand, three hundred forty-two".