2673421 has 4 divisors (see below), whose sum is σ = 2681692. Its totient is φ = 2665152.

The previous prime is 2673397. The next prime is 2673431. The reversal of 2673421 is 1243762.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 741321 + 1932100 = 861^2 + 1390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2673421 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 6⁷ + 7⁶ + 3¹¹ + 4⁵ + 2²¹ + 1 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2673431) 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, 3630 + ... + 4303.

It is an arithmetic number, because the mean of its divisors is an integer number (670423).

2^2673421 is an apocalyptic number.

It is an amenable number.

2673421 is a deficient number, since it is larger than the sum of its proper divisors (8271).

2673421 is an equidigital number, since it uses as much as digits as its factorization.

2673421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8270.

The product of its digits is 2016, while the sum is 25.

The square root of 2673421 is about 1635.0599377393. The cubic root of 2673421 is about 138.7892359886.

The spelling of 2673421 in words is "two million, six hundred seventy-three thousand, four hundred twenty-one".