1242485 has 8 divisors (see below), whose sum is σ = 1525920. Its totient is φ = 970704.

The previous prime is 1242457. The next prime is 1242487. The reversal of 1242485 is 5842421.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1242485 - 2⁶ = 1242421 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2675 + ... + 3104.

It is an arithmetic number, because the mean of its divisors is an integer number (190740).

2^1242485 is an apocalyptic number.

It is an amenable number.

1242485 is a deficient number, since it is larger than the sum of its proper divisors (283435).

1242485 is an equidigital number, since it uses as much as digits as its factorization.

1242485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5827.

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

The square root of 1242485 is about 1114.6681120405. The cubic root of 1242485 is about 107.5054260827.

The spelling of 1242485 in words is "one million, two hundred forty-two thousand, four hundred eighty-five".