1242458 has 8 divisors (see below), whose sum is σ = 2129952. Its totient is φ = 532476.

The previous prime is 1242457. The next prime is 1242487. The reversal of 1242458 is 8542421.

It is a happy number.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1242457) 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, 44360 + ... + 44387.

It is an arithmetic number, because the mean of its divisors is an integer number (266244).

2^1242458 is an apocalyptic number.

1242458 is a deficient number, since it is larger than the sum of its proper divisors (887494).

1242458 is an equidigital number, since it uses as much as digits as its factorization.

1242458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88756.

The product of its digits is 2560, while the sum is 26.

The square root of 1242458 is about 1114.6560007464. The cubic root of 1242458 is about 107.5046473563.

Adding to 1242458 its reverse (8542421), we get a palindrome (9784879).

The spelling of 1242458 in words is "one million, two hundred forty-two thousand, four hundred fifty-eight".