1243622085 has 8 divisors (see below), whose sum is σ = 1989795360. Its totient is φ = 663265104.

The previous prime is 1243622057. The next prime is 1243622089. The reversal of 1243622085 is 5802263421.

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

It is not a de Polignac number, because 1243622085 - 2⁵ = 1243622053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243622089) 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, 41454055 + ... + 41454084.

It is an arithmetic number, because the mean of its divisors is an integer number (248724420).

Almost surely, 2^1243622085 is an apocalyptic number.

1243622085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1243622085 is a deficient number, since it is larger than the sum of its proper divisors (746173275).

1243622085 is an equidigital number, since it uses as much as digits as its factorization.

1243622085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82908147.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 1243622085 is about 35265.0263717468. The cubic root of 1243622085 is about 1075.3821133038.

The spelling of 1243622085 in words is "one billion, two hundred forty-three million, six hundred twenty-two thousand, eighty-five".