1942945 has 8 divisors (see below), whose sum is σ = 2339136. Its totient is φ = 1549296.

The previous prime is 1942943. The next prime is 1942961. The reversal of 1942945 is 5492491.

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 1942945 - 2¹ = 1942943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1942945.

It is not an unprimeable number, because it can be changed into a prime (1942943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2244 + ... + 2986.

It is an arithmetic number, because the mean of its divisors is an integer number (292392).

2^1942945 is an apocalyptic number.

It is an amenable number.

1942945 is a deficient number, since it is larger than the sum of its proper divisors (396191).

1942945 is an equidigital number, since it uses as much as digits as its factorization.

1942945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271.

The product of its digits is 12960, while the sum is 34.

The square root of 1942945 is about 1393.8956201954. The cubic root of 1942945 is about 124.7824482562.

The spelling of 1942945 in words is "one million, nine hundred forty-two thousand, nine hundred forty-five".