1156256442 has 96 divisors (see below), whose sum is σ = 2791241856. Its totient is φ = 342988800.

The previous prime is 1156256441. The next prime is 1156256449. The reversal of 1156256442 is 2446526511.

1156256442 is a `hidden beast` number, since 1 + 1 + 5 + 6 + 2 + 5 + 644 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1156256397 and 1156256406.

It is not an unprimeable number, because it can be changed into a prime (1156256441) 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, 3275338 + ... + 3275690.

It is an arithmetic number, because the mean of its divisors is an integer number (29075436).

Almost surely, 2^1156256442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1156256442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395620928).

1156256442 is an abundant number, since it is smaller than the sum of its proper divisors (1634985414).

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

1156256442 is a wasteful number, since it uses less digits than its factorization.

1156256442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676 (or 673 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 1156256442 is about 34003.7709967586. The cubic root of 1156256442 is about 1049.5860626869.

The spelling of 1156256442 in words is "one billion, one hundred fifty-six million, two hundred fifty-six thousand, four hundred forty-two".