2945842 has 8 divisors (see below), whose sum is σ = 4479516. Its totient is φ = 1452672.

The previous prime is 2945807. The next prime is 2945851. The reversal of 2945842 is 2485492.

It can be written as a sum of positive squares in 2 ways, for example, as 2893401 + 52441 = 1701^2 + 229^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2945798 and 2945807.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9943 + ... + 10234.

2^2945842 is an apocalyptic number.

2945842 is a deficient number, since it is larger than the sum of its proper divisors (1533674).

2945842 is a wasteful number, since it uses less digits than its factorization.

2945842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20252.

The product of its digits is 23040, while the sum is 34.

The square root of 2945842 is about 1716.3455363067. The cubic root of 2945842 is about 143.3517997961.

The spelling of 2945842 in words is "two million, nine hundred forty-five thousand, eight hundred forty-two".