1045271712 has 48 divisors (see below), whose sum is σ = 2810771712. Its totient is φ = 339924480.

The previous prime is 1045271687. The next prime is 1045271713. The reversal of 1045271712 is 2171725401.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1045271712.

It is not an unprimeable number, because it can be changed into a prime (1045271713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128848 + ... + 136719.

It is an arithmetic number, because the mean of its divisors is an integer number (58557744).

Almost surely, 2^1045271712 is an apocalyptic number.

1045271712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1045271712 is an abundant number, since it is smaller than the sum of its proper divisors (1765500000).

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

1045271712 is a wasteful number, since it uses less digits than its factorization.

1045271712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265621 (or 265613 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 1045271712 is about 32330.6621027161. The cubic root of 1045271712 is about 1014.8684055333.

The spelling of 1045271712 in words is "one billion, forty-five million, two hundred seventy-one thousand, seven hundred twelve".