1242100007 has 2 divisors, whose sum is σ = 1242100008. Its totient is φ = 1242100006.

The previous prime is 1242099979. The next prime is 1242100009. The reversal of 1242100007 is 7000012421.

It is a strong prime.

It is an emirp because it is prime and its reverse (7000012421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1242100007 is a prime.

Together with 1242100009, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242100009) 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, 621050003 + 621050004.

It is an arithmetic number, because the mean of its divisors is an integer number (621050004).

Almost surely, 2^1242100007 is an apocalyptic number.

1242100007 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242100007 is an equidigital number, since it uses as much as digits as its factorization.

1242100007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 1242100007 is about 35243.4392050492. The cubic root of 1242100007 is about 1074.9432115666.

Adding to 1242100007 its reverse (7000012421), we get a palindrome (8242112428).

The spelling of 1242100007 in words is "one billion, two hundred forty-two million, one hundred thousand, seven".