1121311142 has 16 divisors (see below), whose sum is σ = 1958517792. Its totient is φ = 471494400.

The previous prime is 1121311141. The next prime is 1121311183. The reversal of 1121311142 is 2411131211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121311142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121311141) 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, 754859 + ... + 756342.

It is an arithmetic number, because the mean of its divisors is an integer number (122407362).

Almost surely, 2^1121311142 is an apocalyptic number.

1121311142 is a deficient number, since it is larger than the sum of its proper divisors (837206650).

1121311142 is a wasteful number, since it uses less digits than its factorization.

1121311142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511263.

The product of its digits is 48, while the sum is 17.

The square root of 1121311142 is about 33485.9842620760. The cubic root of 1121311142 is about 1038.9039062135.

Adding to 1121311142 its reverse (2411131211), we get a palindrome (3532442353).

The spelling of 1121311142 in words is "one billion, one hundred twenty-one million, three hundred eleven thousand, one hundred forty-two".