1242499 has 4 divisors (see below), whose sum is σ = 1246320. Its totient is φ = 1238680.

The previous prime is 1242487. The next prime is 1242503. The reversal of 1242499 is 9942421.

It is a happy number.

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 1242499 - 2⁹ = 1241987 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 1 + 2¹¹ + 4⁵ + 2¹⁷ + 4¹⁰ + 9³ + 9⁵ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242499.

It is not an unprimeable number, because it can be changed into a prime (1242419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1372 + ... + 2089.

It is an arithmetic number, because the mean of its divisors is an integer number (311580).

2^1242499 is an apocalyptic number.

1242499 is a deficient number, since it is larger than the sum of its proper divisors (3821).

1242499 is an equidigital number, since it uses as much as digits as its factorization.

1242499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3820.

The product of its digits is 5184, while the sum is 31.

The square root of 1242499 is about 1114.6743919190. The cubic root of 1242499 is about 107.5058298623.

The spelling of 1242499 in words is "one million, two hundred forty-two thousand, four hundred ninety-nine".