2746421 has 2 divisors, whose sum is σ = 2746422. Its totient is φ = 2746420.

The previous prime is 2746417. The next prime is 2746423. The reversal of 2746421 is 1246472.

2746421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2739025 + 7396 = 1655^2 + 86^2 .

It is a cyclic number.

It is not a de Polignac number, because 2746421 - 2² = 2746417 is a prime.

Together with 2746423, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2746423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1373210 + 1373211.

It is an arithmetic number, because the mean of its divisors is an integer number (1373211).

2^2746421 is an apocalyptic number.

It is an amenable number.

2746421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2746421 is an equidigital number, since it uses as much as digits as its factorization.

2746421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 26.

The square root of 2746421 is about 1657.2329347439. The cubic root of 2746421 is about 140.0411613664.

The spelling of 2746421 in words is "two million, seven hundred forty-six thousand, four hundred twenty-one".