1242324131 has 2 divisors, whose sum is σ = 1242324132. Its totient is φ = 1242324130.

The previous prime is 1242324107. The next prime is 1242324179. The reversal of 1242324131 is 1314232421.

It is a weak prime.

It is an emirp because it is prime and its reverse (1314232421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242324131 is a prime.

It is a super-2 number, since 2×1242324131² = 3086738492929810322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1242324097 and 1242324106.

It is not a weakly prime, because it can be changed into another prime (1242324191) 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 as a sum of consecutive naturals, namely, 621162065 + 621162066.

It is an arithmetic number, because the mean of its divisors is an integer number (621162066).

Almost surely, 2^1242324131 is an apocalyptic number.

1242324131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242324131 is an equidigital number, since it uses as much as digits as its factorization.

1242324131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

The square root of 1242324131 is about 35246.6187172614. The cubic root of 1242324131 is about 1075.0078617777.

Adding to 1242324131 its reverse (1314232421), we get a palindrome (2556556552).

The spelling of 1242324131 in words is "one billion, two hundred forty-two million, three hundred twenty-four thousand, one hundred thirty-one".