1156120711 has 8 divisors (see below), whose sum is σ = 1198344960. Its totient is φ = 1114630968.

The previous prime is 1156120703. The next prime is 1156120811. The reversal of 1156120711 is 1170216511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1156120711 - 2³ = 1156120703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156120811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180421 + ... + 186718.

It is an arithmetic number, because the mean of its divisors is an integer number (149793120).

Almost surely, 2^1156120711 is an apocalyptic number.

1156120711 is a deficient number, since it is larger than the sum of its proper divisors (42224249).

1156120711 is an equidigital number, since it uses as much as digits as its factorization.

1156120711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367253.

The product of its (nonzero) digits is 420, while the sum is 25.

The square root of 1156120711 is about 34001.7751154260. The cubic root of 1156120711 is about 1049.5449913653.

The spelling of 1156120711 in words is "one billion, one hundred fifty-six million, one hundred twenty thousand, seven hundred eleven".