1156402144 has 48 divisors (see below), whose sum is σ = 2418897600. Its totient is φ = 543158784.

The previous prime is 1156402141. The next prime is 1156402157. The reversal of 1156402144 is 4412046511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156402141) 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, 17497 + ... + 51175.

It is an arithmetic number, because the mean of its divisors is an integer number (50393700).

Almost surely, 2^1156402144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1156402144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1209448800).

1156402144 is an abundant number, since it is smaller than the sum of its proper divisors (1262495456).

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

1156402144 is a wasteful number, since it uses less digits than its factorization.

1156402144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33755 (or 33747 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1156402144 is about 34005.9133681188. The cubic root of 1156402144 is about 1049.6301475917.

Adding to 1156402144 its reverse (4412046511), we get a palindrome (5568448655).

It can be divided in two parts, 1156 and 402144, that multiplied together give a palindrome (464878464).

The spelling of 1156402144 in words is "one billion, one hundred fifty-six million, four hundred two thousand, one hundred forty-four".