3120945 has 16 divisors (see below), whose sum is σ = 5287680. Its totient is φ = 1566464.

The previous prime is 3120937. The next prime is 3120973. The reversal of 3120945 is 5490213.

It is a cyclic number.

It is not a de Polignac number, because 3120945 - 2³ = 3120937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5865 + ... + 6374.

It is an arithmetic number, because the mean of its divisors is an integer number (330480).

Almost surely, 2^3120945 is an apocalyptic number.

It is an amenable number.

3120945 is a deficient number, since it is larger than the sum of its proper divisors (2166735).

3120945 is a wasteful number, since it uses less digits than its factorization.

3120945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12264.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 3120945 is about 1766.6196534625. The cubic root of 3120945 is about 146.1376227820.

Multiplying 3120945 by its sum of digits (24), we get a triangular number (74902680 = T₁₂₂₃₉).

The spelling of 3120945 in words is "three million, one hundred twenty thousand, nine hundred forty-five".