1121511442 has 8 divisors (see below), whose sum is σ = 1770807600. Its totient is φ = 531242244.

The previous prime is 1121511431. The next prime is 1121511463. The reversal of 1121511442 is 2441151211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14756692 + ... + 14756767.

It is an arithmetic number, because the mean of its divisors is an integer number (221350950).

Almost surely, 2^1121511442 is an apocalyptic number.

1121511442 is a deficient number, since it is larger than the sum of its proper divisors (649296158).

1121511442 is a wasteful number, since it uses less digits than its factorization.

1121511442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29513480.

The product of its digits is 320, while the sum is 22.

The square root of 1121511442 is about 33488.9749320579. The cubic root of 1121511442 is about 1038.9657623910.

Adding to 1121511442 its reverse (2441151211), we get a palindrome (3562662653).

The spelling of 1121511442 in words is "one billion, one hundred twenty-one million, five hundred eleven thousand, four hundred forty-two".