1156112142 has 16 divisors (see below), whose sum is σ = 2316864000. Its totient is φ = 384597432.

The previous prime is 1156112141. The next prime is 1156112143. The reversal of 1156112142 is 2412116511.

It is an interprime number because it is at equal distance from previous prime (1156112141) and next prime (1156112143).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156112141) 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, 190078 + ... + 196065.

It is an arithmetic number, because the mean of its divisors is an integer number (144804000).

Almost surely, 2^1156112142 is an apocalyptic number.

1156112142 is an abundant number, since it is smaller than the sum of its proper divisors (1160751858).

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

1156112142 is a wasteful number, since it uses less digits than its factorization.

1156112142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386647.

The product of its digits is 480, while the sum is 24.

The square root of 1156112142 is about 34001.6491070654. The cubic root of 1156112142 is about 1049.5423983335.

Adding to 1156112142 its reverse (2412116511), we get a palindrome (3568228653).

The spelling of 1156112142 in words is "one billion, one hundred fifty-six million, one hundred twelve thousand, one hundred forty-two".