1120142121 has 48 divisors (see below), whose sum is σ = 1843680384. Its totient is φ = 590533632.

The previous prime is 1120142119. The next prime is 1120142143. The reversal of 1120142121 is 1212410211.

It is not a de Polignac number, because 1120142121 - 2¹ = 1120142119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1120142121.

It is not an unprimeable number, because it can be changed into a prime (1120142161) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1002255 + ... + 1003371.

It is an arithmetic number, because the mean of its divisors is an integer number (38410008).

Almost surely, 2^1120142121 is an apocalyptic number.

It is an amenable number.

1120142121 is a deficient number, since it is larger than the sum of its proper divisors (723538263).

1120142121 is a wasteful number, since it uses less digits than its factorization.

1120142121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250 (or 1197 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1120142121 is about 33468.5243325725. The cubic root of 1120142121 is about 1038.5427448489.

Adding to 1120142121 its reverse (1212410211), we get a palindrome (2332552332).

The spelling of 1120142121 in words is "one billion, one hundred twenty million, one hundred forty-two thousand, one hundred twenty-one".