1942561 has 4 divisors (see below), whose sum is σ = 1955092. Its totient is φ = 1930032.

The previous prime is 1942547. The next prime is 1942571. The reversal of 1942561 is 1652491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 776161 + 1166400 = 881^2 + 1080^2 .

It is a cyclic number.

It is not a de Polignac number, because 1942561 - 2⁵ = 1942529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1942571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6030 + ... + 6343.

It is an arithmetic number, because the mean of its divisors is an integer number (488773).

2^1942561 is an apocalyptic number.

It is an amenable number.

1942561 is a deficient number, since it is larger than the sum of its proper divisors (12531).

1942561 is a wasteful number, since it uses less digits than its factorization.

1942561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12530.

The product of its digits is 2160, while the sum is 28.

The square root of 1942561 is about 1393.7578699329. The cubic root of 1942561 is about 124.7742271251.

The spelling of 1942561 in words is "one million, nine hundred forty-two thousand, five hundred sixty-one".