1921012 has 12 divisors (see below), whose sum is σ = 3417316. Its totient is φ = 944640.

The previous prime is 1920991. The next prime is 1921013. The reversal of 1921012 is 2101291.

It can be written as a sum of positive squares in 2 ways, for example, as 60516 + 1860496 = 246^2 + 1364^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1921013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3693 + ... + 4180.

2^1921012 is an apocalyptic number.

It is an amenable number.

1921012 is a deficient number, since it is larger than the sum of its proper divisors (1496304).

1921012 is a wasteful number, since it uses less digits than its factorization.

1921012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7938 (or 7936 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1921012 is about 1386.0057719938. The cubic root of 1921012 is about 124.3111333422.

Subtracting from 1921012 its sum of digits (16), we obtain a square (1920996 = 1386²).

The spelling of 1921012 in words is "one million, nine hundred twenty-one thousand, twelve".