1200040685 has 24 divisors (see below), whose sum is σ = 1498761888. Its totient is φ = 922204800.

The previous prime is 1200040607. The next prime is 1200040687. The reversal of 1200040685 is 5860400021.

It is not a de Polignac number, because 1200040685 - 2¹⁶ = 1199975149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200040687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 562070 + ... + 564200.

It is an arithmetic number, because the mean of its divisors is an integer number (62448412).

Almost surely, 2^1200040685 is an apocalyptic number.

It is an amenable number.

1200040685 is a deficient number, since it is larger than the sum of its proper divisors (298721203).

1200040685 is an equidigital number, since it uses as much as digits as its factorization.

1200040685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285 (or 2244 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1200040685 is about 34641.6033837927. The cubic root of 1200040685 is about 1062.6705785646.

The spelling of 1200040685 in words is "one billion, two hundred million, forty thousand, six hundred eighty-five".