3421257 has 8 divisors (see below), whose sum is σ = 5213376. Its totient is φ = 1954992.

The previous prime is 3421241. The next prime is 3421321. The reversal of 3421257 is 7521243.

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

It is not a de Polignac number, because 3421257 - 2⁴ = 3421241 is a prime.

3421257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3421237) 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, 81438 + ... + 81479.

It is an arithmetic number, because the mean of its divisors is an integer number (651672).

Almost surely, 2^3421257 is an apocalyptic number.

It is an amenable number.

3421257 is a deficient number, since it is larger than the sum of its proper divisors (1792119).

3421257 is a wasteful number, since it uses less digits than its factorization.

3421257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162927.

The product of its digits is 1680, while the sum is 24.

The square root of 3421257 is about 1849.6640235459. The cubic root of 3421257 is about 150.6821817065.

The spelling of 3421257 in words is "three million, four hundred twenty-one thousand, two hundred fifty-seven".