1156042712 has 64 divisors (see below), whose sum is σ = 2403302400. Its totient is φ = 521268000.

The previous prime is 1156042703. The next prime is 1156042717. The reversal of 1156042712 is 2172406511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156042717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1607489 + ... + 1608207.

It is an arithmetic number, because the mean of its divisors is an integer number (37551600).

Almost surely, 2^1156042712 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 1156042712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1201651200).

1156042712 is an abundant number, since it is smaller than the sum of its proper divisors (1247259688).

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

1156042712 is a wasteful number, since it uses less digits than its factorization.

1156042712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909 (or 883 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1156042712 is about 34000.6281118452. The cubic root of 1156042712 is about 1049.5213879186.

The spelling of 1156042712 in words is "one billion, one hundred fifty-six million, forty-two thousand, seven hundred twelve".