1242259 has 6 divisors (see below), whose sum is σ = 1275020. Its totient is φ = 1210320.

The previous prime is 1242251. The next prime is 1242271. The reversal of 1242259 is 9522421.

It is not a de Polignac number, because 1242259 - 2³ = 1242251 is a prime.

It is a Duffinian number.

1242259 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1242251) 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 5 ways as a sum of consecutive naturals, for example, 1312 + ... + 2050.

2^1242259 is an apocalyptic number.

1242259 is a deficient number, since it is larger than the sum of its proper divisors (32761).

1242259 is an frugal number, since it uses more digits than its factorization.

1242259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821 (or 780 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 1242259 is about 1114.5667319636. The cubic root of 1242259 is about 107.4989075065.

The spelling of 1242259 in words is "one million, two hundred forty-two thousand, two hundred fifty-nine".