1205056878 has 16 divisors (see below), whose sum is σ = 2411341056. Its totient is φ = 401481080.

The previous prime is 1205056861. The next prime is 1205056889. The reversal of 1205056878 is 8786505021.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38118 + ... + 62153.

It is an arithmetic number, because the mean of its divisors is an integer number (150708816).

Almost surely, 2^1205056878 is an apocalyptic number.

1205056878 is an abundant number, since it is smaller than the sum of its proper divisors (1206284178).

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

1205056878 is a wasteful number, since it uses less digits than its factorization.

1205056878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102279.

The product of its (nonzero) digits is 134400, while the sum is 42.

The square root of 1205056878 is about 34713.9291639538. The cubic root of 1205056878 is about 1064.1491813882.

The spelling of 1205056878 in words is "one billion, two hundred five million, fifty-six thousand, eight hundred seventy-eight".