2791421 has 8 divisors (see below), whose sum is σ = 2883744. Its totient is φ = 2700720.

The previous prime is 2791409. The next prime is 2791429. The reversal of 2791421 is 1241972.

2791421 = T₁₅₀ + T₁₅₁ + ... + T₂₇₁.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2791421 - 2⁶ = 2791357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2791429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3746 + ... + 4428.

It is an arithmetic number, because the mean of its divisors is an integer number (360468).

2^2791421 is an apocalyptic number.

It is an amenable number.

2791421 is a deficient number, since it is larger than the sum of its proper divisors (92323).

2791421 is an equidigital number, since it uses as much as digits as its factorization.

2791421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811.

The product of its digits is 1008, while the sum is 26.

The square root of 2791421 is about 1670.7546199248. The cubic root of 2791421 is about 140.8018779073.

The spelling of 2791421 in words is "two million, seven hundred ninety-one thousand, four hundred twenty-one".