1285140006 has 48 divisors (see below), whose sum is σ = 2936606400. Its totient is φ = 421109928.

The previous prime is 1285139953. The next prime is 1285140047. The reversal of 1285140006 is 6000415821.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6265 + ... + 51083.

It is an arithmetic number, because the mean of its divisors is an integer number (61179300).

Almost surely, 2^1285140006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1285140006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1468303200).

1285140006 is an abundant number, since it is smaller than the sum of its proper divisors (1651466394).

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

1285140006 is an equidigital number, since it uses as much as digits as its factorization.

1285140006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44895 (or 44883 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1285140006 is about 35848.8494376040. The cubic root of 1285140006 is about 1087.2184517284.

Adding to 1285140006 its reverse (6000415821), we get a palindrome (7285555827).

The spelling of 1285140006 in words is "one billion, two hundred eighty-five million, one hundred forty thousand, six".