3057421 has 4 divisors (see below), whose sum is σ = 3140092. Its totient is φ = 2974752.

The previous prime is 3057403. The next prime is 3057427. The reversal of 3057421 is 1247503.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1247503 = 173 ⋅7211.

It can be written as a sum of positive squares in 2 ways, for example, as 2368521 + 688900 = 1539^2 + 830^2 .

It is a cyclic number.

It is not a de Polignac number, because 3057421 - 2⁷ = 3057293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3057392 and 3057401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3057427) 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, 41280 + ... + 41353.

It is an arithmetic number, because the mean of its divisors is an integer number (785023).

Almost surely, 2^3057421 is an apocalyptic number.

It is an amenable number.

3057421 is a deficient number, since it is larger than the sum of its proper divisors (82671).

3057421 is an equidigital number, since it uses as much as digits as its factorization.

3057421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82670.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 3057421 is about 1748.5482549818. The cubic root of 3057421 is about 145.1393191284.

The spelling of 3057421 in words is "three million, fifty-seven thousand, four hundred twenty-one".