3357421 has 4 divisors (see below), whose sum is σ = 3400000. Its totient is φ = 3314844.

The previous prime is 3357413. The next prime is 3357439. The reversal of 3357421 is 1247533.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3357421 - 2³ = 3357413 is a prime.

It is a super-2 number, since 2×3357421² = 22544551542482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3357451) 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, 21171 + ... + 21328.

It is an arithmetic number, because the mean of its divisors is an integer number (850000).

Almost surely, 2^3357421 is an apocalyptic number.

It is an amenable number.

3357421 is a deficient number, since it is larger than the sum of its proper divisors (42579).

3357421 is an equidigital number, since it uses as much as digits as its factorization.

3357421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42578.

The product of its digits is 2520, while the sum is 25.

The square root of 3357421 is about 1832.3266630162. The cubic root of 3357421 is about 149.7391169001.

The spelling of 3357421 in words is "three million, three hundred fifty-seven thousand, four hundred twenty-one".