1156140126 has 48 divisors (see below), whose sum is σ = 2617729920. Its totient is φ = 368082000.

The previous prime is 1156140121. The next prime is 1156140127. The reversal of 1156140126 is 6210416511.

It is a self number, because there is not a number n which added to its sum of digits gives 1156140126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156140121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 354001 + ... + 357251.

It is an arithmetic number, because the mean of its divisors is an integer number (54536040).

Almost surely, 2^1156140126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1156140126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1308864960).

1156140126 is an abundant number, since it is smaller than the sum of its proper divisors (1461589794).

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

1156140126 is a wasteful number, since it uses less digits than its factorization.

1156140126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4141 (or 4138 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1156140126 is about 34002.0606140275. The cubic root of 1156140126 is about 1049.5508664156.

Adding to 1156140126 its reverse (6210416511), we get a palindrome (7366556637).

The spelling of 1156140126 in words is "one billion, one hundred fifty-six million, one hundred forty thousand, one hundred twenty-six".