1156342356 has 72 divisors (see below), whose sum is σ = 3313521120. Its totient is φ = 337068864.

The previous prime is 1156342351. The next prime is 1156342367. The reversal of 1156342356 is 6532436511.

1156342356 is a `hidden beast` number, since 1 + 1 + 563 + 42 + 3 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1156342356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156342351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56130 + ... + 73913.

Almost surely, 2^1156342356 is an apocalyptic number.

It is an amenable number.

1156342356 is an abundant number, since it is smaller than the sum of its proper divisors (2157178764).

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

1156342356 is a wasteful number, since it uses less digits than its factorization.

1156342356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130085 (or 130080 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 1156342356 is about 34005.0342743541. The cubic root of 1156342356 is about 1049.6120580459.

Adding to 1156342356 its reverse (6532436511), we get a palindrome (7688778867).

The spelling of 1156342356 in words is "one billion, one hundred fifty-six million, three hundred forty-two thousand, three hundred fifty-six".