1242307 has 6 divisors (see below), whose sum is σ = 1365644. Its totient is φ = 1129260.

The previous prime is 1242289. The next prime is 1242317. The reversal of 1242307 is 7032421.

It is not a de Polignac number, because 1242307 - 2¹⁵ = 1209539 is a prime.

It is a Duffinian 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 (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5013 + ... + 5254.

2^1242307 is an apocalyptic number.

1242307 is a deficient number, since it is larger than the sum of its proper divisors (123337).

1242307 is a wasteful number, since it uses less digits than its factorization.

1242307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10289 (or 10278 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 1242307 is about 1114.5882647866. The cubic root of 1242307 is about 107.5002920490.

Adding to 1242307 its reverse (7032421), we get a palindrome (8274728).

The spelling of 1242307 in words is "one million, two hundred forty-two thousand, three hundred seven".