1242319 has 6 divisors (see below), whose sum is σ = 1345416. Its totient is φ = 1146600.

The previous prime is 1242317. The next prime is 1242347. The reversal of 1242319 is 9132421.

It is not a de Polignac number, because 1242319 - 2¹ = 1242317 is a prime.

It is a super-2 number, since 2×1242319² = 3086712995522, which contains 22 as substring.

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 1242319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242317) 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 5 ways as a sum of consecutive naturals, for example, 3507 + ... + 3844.

It is an arithmetic number, because the mean of its divisors is an integer number (224236).

2^1242319 is an apocalyptic number.

1242319 is a deficient number, since it is larger than the sum of its proper divisors (103097).

1242319 is an equidigital number, since it uses as much as digits as its factorization.

1242319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7377 (or 7364 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

The square root of 1242319 is about 1114.5936479274. The cubic root of 1242319 is about 107.5006381790.

The spelling of 1242319 in words is "one million, two hundred forty-two thousand, three hundred nineteen".