1242342132529 has 2 divisors, whose sum is σ = 1242342132530. Its totient is φ = 1242342132528.

The previous prime is 1242342132509. The next prime is 1242342132533. The reversal of 1242342132529 is 9252312432421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 828027201600 + 414314930929 = 909960^2 + 643673^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242342132529 - 2¹¹ = 1242342130481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1242342132491 and 1242342132500.

It is not a weakly prime, because it can be changed into another prime (1242342132509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621171066264 + 621171066265.

It is an arithmetic number, because the mean of its divisors is an integer number (621171066265).

Almost surely, 2^{1242342132529} is an apocalyptic number.

It is an amenable number.

1242342132529 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242342132529 is an equidigital number, since it uses as much as digits as its factorization.

1242342132529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 40.

The spelling of 1242342132529 in words is "one trillion, two hundred forty-two billion, three hundred forty-two million, one hundred thirty-two thousand, five hundred twenty-nine".