1242583 has 4 divisors (see below), whose sum is σ = 1245760. Its totient is φ = 1239408.

The previous prime is 1242569. The next prime is 1242601. The reversal of 1242583 is 3852421.

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

It is a cyclic number.

It is not a de Polignac number, because 1242583 - 2¹³ = 1234391 is a prime.

It is a Duffinian number.

1242583 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242503) 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, 903 + ... + 1816.

It is an arithmetic number, because the mean of its divisors is an integer number (311440).

2^1242583 is an apocalyptic number.

1242583 is a deficient number, since it is larger than the sum of its proper divisors (3177).

1242583 is an equidigital number, since it uses as much as digits as its factorization.

1242583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3176.

The product of its digits is 1920, while the sum is 25.

The square root of 1242583 is about 1114.7120704469. The cubic root of 1242583 is about 107.5082524763.

The spelling of 1242583 in words is "one million, two hundred forty-two thousand, five hundred eighty-three".