1242286 has 4 divisors (see below), whose sum is σ = 1863432. Its totient is φ = 621142.

The previous prime is 1242271. The next prime is 1242289. The reversal of 1242286 is 6822421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6822421 = 23 ⋅296627.

It is a self number, because there is not a number n which added to its sum of digits gives 1242286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310570 + ... + 310573.

It is an arithmetic number, because the mean of its divisors is an integer number (465858).

2^1242286 is an apocalyptic number.

1242286 is a deficient number, since it is larger than the sum of its proper divisors (621146).

1242286 is an equidigital number, since it uses as much as digits as its factorization.

1242286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621145.

The product of its digits is 1536, while the sum is 25.

The square root of 1242286 is about 1114.5788442277. The cubic root of 1242286 is about 107.4996863160.

The spelling of 1242286 in words is "one million, two hundred forty-two thousand, two hundred eighty-six".