1005045212 has 24 divisors (see below), whose sum is σ = 1767444672. Its totient is φ = 500068800.

The previous prime is 1005045193. The next prime is 1005045277. The reversal of 1005045212 is 2125405001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1223762 + ... + 1224582.

It is an arithmetic number, because the mean of its divisors is an integer number (73643528).

Almost surely, 2^1005045212 is an apocalyptic number.

It is an amenable number.

1005045212 is a deficient number, since it is larger than the sum of its proper divisors (762399460).

1005045212 is a wasteful number, since it uses less digits than its factorization.

1005045212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949 (or 1947 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1005045212 is about 31702.4480442757. The cubic root of 1005045212 is about 1001.6789169936.

The spelling of 1005045212 in words is "one billion, five million, forty-five thousand, two hundred twelve".