3420945 has 24 divisors (see below), whose sum is σ = 6469632. Its totient is φ = 1658400.

The previous prime is 3420919. The next prime is 3420959. The reversal of 3420945 is 5490243.

It is not a de Polignac number, because 3420945 - 2⁵ = 3420913 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2961 + ... + 3950.

It is an arithmetic number, because the mean of its divisors is an integer number (269568).

Almost surely, 2^3420945 is an apocalyptic number.

It is an amenable number.

3420945 is a deficient number, since it is larger than the sum of its proper divisors (3048687).

3420945 is a wasteful number, since it uses less digits than its factorization.

3420945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6933 (or 6930 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 3420945 is about 1849.5796819818. The cubic root of 3420945 is about 150.6776011025.

The spelling of 3420945 in words is "three million, four hundred twenty thousand, nine hundred forty-five".