3457421 has 8 divisors (see below), whose sum is σ = 3789504. Its totient is φ = 3128320.

The previous prime is 3457417. The next prime is 3457427. The reversal of 3457421 is 1247543.

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

It is a cyclic number.

It is not a de Polignac number, because 3457421 - 2² = 3457417 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 (3457427) 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, 2216 + ... + 3438.

It is an arithmetic number, because the mean of its divisors is an integer number (473688).

Almost surely, 2^3457421 is an apocalyptic number.

It is an amenable number.

3457421 is a deficient number, since it is larger than the sum of its proper divisors (332083).

3457421 is a wasteful number, since it uses less digits than its factorization.

3457421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491.

The product of its digits is 3360, while the sum is 26.

The square root of 3457421 is about 1859.4141550499. The cubic root of 3457421 is about 151.2112447662.

The spelling of 3457421 in words is "three million, four hundred fifty-seven thousand, four hundred twenty-one".