1242495827 has 2 divisors, whose sum is σ = 1242495828. Its totient is φ = 1242495826.

The previous prime is 1242495817. The next prime is 1242495829. The reversal of 1242495827 is 7285942421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1242495827 - 2⁸ = 1242495571 is a prime.

It is a super-2 number, since 2×1242495827² = 3087591760224827858, which contains 22 as substring.

Together with 1242495829, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1242495829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621247913 + 621247914.

It is an arithmetic number, because the mean of its divisors is an integer number (621247914).

Almost surely, 2^1242495827 is an apocalyptic number.

1242495827 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242495827 is an equidigital number, since it uses as much as digits as its factorization.

1242495827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 44.

The square root of 1242495827 is about 35249.0542710014. The cubic root of 1242495827 is about 1075.0573834881.

The spelling of 1242495827 in words is "one billion, two hundred forty-two million, four hundred ninety-five thousand, eight hundred twenty-seven".