1121542242 has 16 divisors (see below), whose sum is σ = 2315442432. Its totient is φ = 361787760.

The previous prime is 1121542229. The next prime is 1121542243. The reversal of 1121542242 is 2422451211.

It is not an unprimeable number, because it can be changed into a prime (1121542243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3014713 + ... + 3015084.

It is an arithmetic number, because the mean of its divisors is an integer number (144715152).

Almost surely, 2^1121542242 is an apocalyptic number.

1121542242 is an abundant number, since it is smaller than the sum of its proper divisors (1193900190).

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

1121542242 is a wasteful number, since it uses less digits than its factorization.

1121542242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6029833.

The product of its digits is 1280, while the sum is 24.

The square root of 1121542242 is about 33489.4347817338. The cubic root of 1121542242 is about 1038.9752733216.

Adding to 1121542242 its reverse (2422451211), we get a palindrome (3543993453).

The spelling of 1121542242 in words is "one billion, one hundred twenty-one million, five hundred forty-two thousand, two hundred forty-two".