1968421 has 16 divisors (see below), whose sum is σ = 2458624. Its totient is φ = 1534464.

The previous prime is 1968403. The next prime is 1968427. The reversal of 1968421 is 1248691.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1968421 - 2⁷ = 1968293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8716 + ... + 8938.

It is an arithmetic number, because the mean of its divisors is an integer number (153664).

2^1968421 is an apocalyptic number.

It is an amenable number.

1968421 is a deficient number, since it is larger than the sum of its proper divisors (490203).

1968421 is a wasteful number, since it uses less digits than its factorization.

1968421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340.

The product of its digits is 3456, while the sum is 31.

The square root of 1968421 is about 1403.0042765437. The cubic root of 1968421 is about 125.3254665036.

The spelling of 1968421 in words is "one million, nine hundred sixty-eight thousand, four hundred twenty-one".