1242475 has 12 divisors (see below), whose sum is σ = 1659616. Its totient is φ = 917280.

The previous prime is 1242457. The next prime is 1242487. The reversal of 1242475 is 5742421.

It is not a de Polignac number, because 1242475 - 2⁷ = 1242347 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

1242475 is a lucky number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1587 + ... + 2236.

2^1242475 is an apocalyptic number.

1242475 is a deficient number, since it is larger than the sum of its proper divisors (417141).

1242475 is a wasteful number, since it uses less digits than its factorization.

1242475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3846 (or 3841 counting only the distinct ones).

The product of its digits is 2240, while the sum is 25.

The square root of 1242475 is about 1114.6636263914. The cubic root of 1242475 is about 107.5051376668.

Adding to 1242475 its reverse (5742421), we get a palindrome (6984896).

The spelling of 1242475 in words is "one million, two hundred forty-two thousand, four hundred seventy-five".