1242538 has 8 divisors (see below), whose sum is σ = 2033280. Its totient is φ = 564780.

The previous prime is 1242517. The next prime is 1242569. The reversal of 1242538 is 8352421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28218 + ... + 28261.

It is an arithmetic number, because the mean of its divisors is an integer number (254160).

2^1242538 is an apocalyptic number.

1242538 is a deficient number, since it is larger than the sum of its proper divisors (790742).

1242538 is a wasteful number, since it uses less digits than its factorization.

1242538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56492.

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

The square root of 1242538 is about 1114.6918856796. The cubic root of 1242538 is about 107.5069546609.

Adding to 1242538 its reverse (8352421), we get a palindrome (9594959).

It can be divided in two parts, 124 and 2538, that added together give a palindrome (2662).

The spelling of 1242538 in words is "one million, two hundred forty-two thousand, five hundred thirty-eight".