1242381061 has 2 divisors, whose sum is σ = 1242381062. Its totient is φ = 1242381060.

The previous prime is 1242381059. The next prime is 1242381071. The reversal of 1242381061 is 1601832421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1236858561 + 5522500 = 35169^2 + 2350^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242381061 - 2¹ = 1242381059 is a prime.

Together with 1242381059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242381031) 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, 621190530 + 621190531.

It is an arithmetic number, because the mean of its divisors is an integer number (621190531).

Almost surely, 2^1242381061 is an apocalyptic number.

It is an amenable number.

1242381061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242381061 is an equidigital number, since it uses as much as digits as its factorization.

1242381061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1242381061 is about 35247.4263032069. The cubic root of 1242381061 is about 1075.0242824153.

The spelling of 1242381061 in words is "one billion, two hundred forty-two million, three hundred eighty-one thousand, sixty-one".