1242113629 has 2 divisors, whose sum is σ = 1242113630. Its totient is φ = 1242113628.

The previous prime is 1242113567. The next prime is 1242113641. The reversal of 1242113629 is 9263112421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1236928900 + 5184729 = 35170^2 + 2277^2 .

It is an emirp because it is prime and its reverse (9263112421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1242113629 - 2¹¹ = 1242111581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1242113629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242113029) 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, 621056814 + 621056815.

It is an arithmetic number, because the mean of its divisors is an integer number (621056815).

Almost surely, 2^1242113629 is an apocalyptic number.

It is an amenable number.

1242113629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242113629 is an equidigital number, since it uses as much as digits as its factorization.

1242113629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 1242113629 is about 35243.6324603466. The cubic root of 1242113629 is about 1074.9471411543.

The spelling of 1242113629 in words is "one billion, two hundred forty-two million, one hundred thirteen thousand, six hundred twenty-nine".