1240573 has 4 divisors (see below), whose sum is σ = 1274140. Its totient is φ = 1207008.

The previous prime is 1240559. The next prime is 1240607. The reversal of 1240573 is 3750421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3750421 = 17 ⋅220613.

It can be written as a sum of positive squares in 2 ways, for example, as 956484 + 284089 = 978^2 + 533^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1240573 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240523) 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, 16728 + ... + 16801.

It is an arithmetic number, because the mean of its divisors is an integer number (318535).

2^1240573 is an apocalyptic number.

It is an amenable number.

1240573 is a deficient number, since it is larger than the sum of its proper divisors (33567).

1240573 is an equidigital number, since it uses as much as digits as its factorization.

1240573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33566.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 1240573 is about 1113.8101274454. The cubic root of 1240573 is about 107.4502528071.

Adding to 1240573 its reverse (3750421), we get a palindrome (4990994).

The spelling of 1240573 in words is "one million, two hundred forty thousand, five hundred seventy-three".