1285112712 has 64 divisors (see below), whose sum is σ = 3553462080. Its totient is φ = 384728832.

The previous prime is 1285112687. The next prime is 1285112713. The reversal of 1285112712 is 2172115821.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1285112712.

It is not an unprimeable number, because it can be changed into a prime (1285112713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44118 + ... + 67205.

It is an arithmetic number, because the mean of its divisors is an integer number (55522845).

Almost surely, 2^1285112712 is an apocalyptic number.

1285112712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1285112712 is an abundant number, since it is smaller than the sum of its proper divisors (2268349368).

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

1285112712 is a wasteful number, since it uses less digits than its factorization.

1285112712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111382 (or 111378 counting only the distinct ones).

The product of its digits is 2240, while the sum is 30.

The square root of 1285112712 is about 35848.4687539091. The cubic root of 1285112712 is about 1087.2107548367.

The spelling of 1285112712 in words is "one billion, two hundred eighty-five million, one hundred twelve thousand, seven hundred twelve".