1122311142 has 24 divisors (see below), whose sum is σ = 2446241616. Its totient is φ = 371862576.

The previous prime is 1122311131. The next prime is 1122311147. The reversal of 1122311142 is 2411132211.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122311147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183673 + ... + 189684.

It is an arithmetic number, because the mean of its divisors is an integer number (101926734).

Almost surely, 2^1122311142 is an apocalyptic number.

1122311142 is an abundant number, since it is smaller than the sum of its proper divisors (1323930474).

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

1122311142 is a wasteful number, since it uses less digits than its factorization.

1122311142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373532 (or 373529 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1122311142 is about 33500.9125547350. The cubic root of 1122311142 is about 1039.2126504993.

Adding to 1122311142 its reverse (2411132211), we get a palindrome (3533443353).

The spelling of 1122311142 in words is "one billion, one hundred twenty-two million, three hundred eleven thousand, one hundred forty-two".