1234561 has 4 divisors (see below), whose sum is σ = 1240624. Its totient is φ = 1228500.

The previous prime is 1234547. The next prime is 1234577. The reversal of 1234561 is 1654321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1234561 - 2⁹ = 1234049 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1234511) 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, 2715 + ... + 3136.

It is an arithmetic number, because the mean of its divisors is an integer number (310156).

2^1234561 is an apocalyptic number.

It is an amenable number.

1234561 is a deficient number, since it is larger than the sum of its proper divisors (6063).

1234561 is an equidigital number, since it uses as much as digits as its factorization.

1234561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6062.

The product of its digits is 720, while the sum is 22.

The square root of 1234561 is about 1111.1080055512. The cubic root of 1234561 is about 107.2763983971.

Adding to 1234561 its reverse (1654321), we get a palindrome (2888882).

The spelling of 1234561 in words is "one million, two hundred thirty-four thousand, five hundred sixty-one".