1005245412 has 12 divisors (see below), whose sum is σ = 2345572656. Its totient is φ = 335081800.

The previous prime is 1005245389. The next prime is 1005245431. The reversal of 1005245412 is 2145425001.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41885214 + ... + 41885237.

It is an arithmetic number, because the mean of its divisors is an integer number (195464388).

Almost surely, 2^1005245412 is an apocalyptic number.

1005245412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1005245412 is an abundant number, since it is smaller than the sum of its proper divisors (1340327244).

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

1005245412 is a wasteful number, since it uses less digits than its factorization.

1005245412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83770458 (or 83770456 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1005245412 is about 31705.6053719212. The cubic root of 1005245412 is about 1001.7454223949.

The spelling of 1005245412 in words is "one billion, five million, two hundred forty-five thousand, four hundred twelve".