1242459 has 12 divisors (see below), whose sum is σ = 1861496. Its totient is φ = 828144.

The previous prime is 1242457. The next prime is 1242487. The reversal of 1242459 is 9542421.

It is not a de Polignac number, because 1242459 - 2¹ = 1242457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1242457) 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 11 ways as a sum of consecutive naturals, for example, 2314 + ... + 2799.

2^1242459 is an apocalyptic number.

1242459 is a deficient number, since it is larger than the sum of its proper divisors (619037).

1242459 is an frugal number, since it uses more digits than its factorization.

1242459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5128 (or 5116 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1242459 is about 1114.6564493152. The cubic root of 1242459 is about 107.5046761982.

The spelling of 1242459 in words is "one million, two hundred forty-two thousand, four hundred fifty-nine".