1205055071 has 8 divisors (see below), whose sum is σ = 1315174224. Its totient is φ = 1095030720.

The previous prime is 1205055041. The next prime is 1205055073. The reversal of 1205055071 is 1705505021.

It is a happy number.

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 1205055071 - 2¹⁰ = 1205054047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1205055071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205055073) 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, 4331 + ... + 49283.

It is an arithmetic number, because the mean of its divisors is an integer number (164396778).

Almost surely, 2^1205055071 is an apocalyptic number.

1205055071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1205055071 is a deficient number, since it is larger than the sum of its proper divisors (110119153).

1205055071 is a wasteful number, since it uses less digits than its factorization.

1205055071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47401.

The product of its (nonzero) digits is 1750, while the sum is 26.

The square root of 1205055071 is about 34713.9031369277. The cubic root of 1205055071 is about 1064.1486494856.

The spelling of 1205055071 in words is "one billion, two hundred five million, fifty-five thousand, seventy-one".