1242642341 has 2 divisors, whose sum is σ = 1242642342. Its totient is φ = 1242642340.

The previous prime is 1242642329. The next prime is 1242642361. The reversal of 1242642341 is 1432462421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 803949316 + 438693025 = 28354^2 + 20945^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242642341 - 2⁶ = 1242642277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242642361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621321170 + 621321171.

It is an arithmetic number, because the mean of its divisors is an integer number (621321171).

Almost surely, 2^1242642341 is an apocalyptic number.

It is an amenable number.

1242642341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242642341 is an equidigital number, since it uses as much as digits as its factorization.

1242642341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 29.

The square root of 1242642341 is about 35251.1324782623. The cubic root of 1242642341 is about 1075.0996384299.

The spelling of 1242642341 in words is "one billion, two hundred forty-two million, six hundred forty-two thousand, three hundred forty-one".