1971012 has 12 divisors (see below), whose sum is σ = 4599056. Its totient is φ = 657000.

The previous prime is 1971007. The next prime is 1971023. The reversal of 1971012 is 2101791.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1971012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82114 + ... + 82137.

2^1971012 is an apocalyptic number.

1971012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1971012 is an abundant number, since it is smaller than the sum of its proper divisors (2628044).

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

1971012 is a wasteful number, since it uses less digits than its factorization.

1971012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164258 (or 164256 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 21.

The square root of 1971012 is about 1403.9273485476. The cubic root of 1971012 is about 125.3804303408.

The spelling of 1971012 in words is "one million, nine hundred seventy-one thousand, twelve".