1200040085 has 8 divisors (see below), whose sum is σ = 1454306616. Its totient is φ = 950526400.

The previous prime is 1200040073. The next prime is 1200040103. The reversal of 1200040085 is 5800400021.

It can be written as a sum of positive squares in 4 ways, for example, as 278189041 + 921851044 = 16679^2 + 30362^2 .

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

It is not a de Polignac number, because 1200040085 - 2¹² = 1200035989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1187654 + ... + 1188663.

It is an arithmetic number, because the mean of its divisors is an integer number (181788327).

Almost surely, 2^1200040085 is an apocalyptic number.

It is an amenable number.

1200040085 is a deficient number, since it is larger than the sum of its proper divisors (254266531).

1200040085 is a wasteful number, since it uses less digits than its factorization.

1200040085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2376423.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1200040085 is about 34641.5947236844. The cubic root of 1200040085 is about 1062.6704014588.

The spelling of 1200040085 in words is "one billion, two hundred million, forty thousand, eighty-five".