1974421 has 4 divisors (see below), whose sum is σ = 2038144. Its totient is φ = 1910700.

The previous prime is 1974403. The next prime is 1974433. The reversal of 1974421 is 1244791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1974421 - 2¹⁷ = 1843349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1974421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1974121) 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, 31815 + ... + 31876.

It is an arithmetic number, because the mean of its divisors is an integer number (509536).

2^1974421 is an apocalyptic number.

It is an amenable number.

1974421 is a deficient number, since it is larger than the sum of its proper divisors (63723).

1974421 is an equidigital number, since it uses as much as digits as its factorization.

1974421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63722.

The product of its digits is 2016, while the sum is 28.

The square root of 1974421 is about 1405.1409182000. The cubic root of 1974421 is about 125.4526733823.

The spelling of 1974421 in words is "one million, nine hundred seventy-four thousand, four hundred twenty-one".