3421247 has 4 divisors (see below), whose sum is σ = 3431400. Its totient is φ = 3411096.

The previous prime is 3421241. The next prime is 3421321. The reversal of 3421247 is 7421243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7421243 = 149 ⋅49807.

It is a cyclic number.

It is not a de Polignac number, because 3421247 - 2¹² = 3417151 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 (3421241) 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, 4553 + ... + 5250.

It is an arithmetic number, because the mean of its divisors is an integer number (857850).

Almost surely, 2^3421247 is an apocalyptic number.

3421247 is a deficient number, since it is larger than the sum of its proper divisors (10153).

3421247 is an equidigital number, since it uses as much as digits as its factorization.

3421247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10152.

The product of its digits is 1344, while the sum is 23.

The square root of 3421247 is about 1849.6613203503. The cubic root of 3421247 is about 150.6820348965.

The spelling of 3421247 in words is "three million, four hundred twenty-one thousand, two hundred forty-seven".