1121535042 has 16 divisors (see below), whose sum is σ = 2250286272. Its totient is φ = 372642320.

The previous prime is 1121535031. The next prime is 1121535089. The reversal of 1121535042 is 2405351211.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298653 + ... + 302384.

It is an arithmetic number, because the mean of its divisors is an integer number (140642892).

Almost surely, 2^1121535042 is an apocalyptic number.

1121535042 is an abundant number, since it is smaller than the sum of its proper divisors (1128751230).

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

1121535042 is a wasteful number, since it uses less digits than its factorization.

1121535042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601353.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1121535042 is about 33489.3272849724. The cubic root of 1121535042 is about 1038.9730500028.

Adding to 1121535042 its reverse (2405351211), we get a palindrome (3526886253).

The spelling of 1121535042 in words is "one billion, one hundred twenty-one million, five hundred thirty-five thousand, forty-two".