1242306 has 24 divisors (see below), whose sum is σ = 2899260. Its totient is φ = 382176.

The previous prime is 1242289. The next prime is 1242317. The reversal of 1242306 is 6032421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 893025 + 349281 = 945^2 + 591^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2421 + ... + 2888.

2^1242306 is an apocalyptic number.

1242306 is an abundant number, since it is smaller than the sum of its proper divisors (1656954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242306 is a wasteful number, since it uses less digits than its factorization.

1242306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5330 (or 5327 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1242306 is about 1114.5878161904. The cubic root of 1242306 is about 107.5002632047.

Adding to 1242306 its reverse (6032421), we get a palindrome (7274727).

The spelling of 1242306 in words is "one million, two hundred forty-two thousand, three hundred six".