1243622 has 8 divisors (see below), whose sum is σ = 1883856. Its totient is φ = 615672.

The previous prime is 1243609. The next prime is 1243631. The reversal of 1243622 is 2263421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1243594 and 1243603.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2813 + ... + 3224.

It is an arithmetic number, because the mean of its divisors is an integer number (235482).

2^1243622 is an apocalyptic number.

1243622 is a deficient number, since it is larger than the sum of its proper divisors (640234).

1243622 is a wasteful number, since it uses less digits than its factorization.

1243622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6142.

The product of its digits is 576, while the sum is 20.

The square root of 1243622 is about 1115.1780126957. The cubic root of 1243622 is about 107.5382088803.

It can be divided in two parts, 1243 and 622, that multiplied together give a triangular number (773146 = T₁₂₄₃).

The spelling of 1243622 in words is "one million, two hundred forty-three thousand, six hundred twenty-two".