1236442 has 8 divisors (see below), whose sum is σ = 1873332. Its totient is φ = 612000.

The previous prime is 1236439. The next prime is 1236449. The reversal of 1236442 is 2446321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1229881 + 6561 = 1109^2 + 81^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1236449) 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 3 ways as a sum of consecutive naturals, for example, 2859 + ... + 3262.

2^1236442 is an apocalyptic number.

1236442 is a deficient number, since it is larger than the sum of its proper divisors (636890).

1236442 is a wasteful number, since it uses less digits than its factorization.

1236442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6224.

The product of its digits is 1152, while the sum is 22.

The square root of 1236442 is about 1111.9541357448. The cubic root of 1236442 is about 107.3308535192.

The spelling of 1236442 in words is "one million, two hundred thirty-six thousand, four hundred forty-two".