1242340132009 has 2 divisors, whose sum is σ = 1242340132010. Its totient is φ = 1242340132008.

The previous prime is 1242340131983. The next prime is 1242340132031. The reversal of 1242340132009 is 9002310432421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 866574810000 + 375765322009 = 930900^2 + 612997^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242340132009 - 2¹⁵ = 1242340099241 is a prime.

It is not a weakly prime, because it can be changed into another prime (1242340139009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621170066004 + 621170066005.

It is an arithmetic number, because the mean of its divisors is an integer number (621170066005).

Almost surely, 2^{1242340132009} is an apocalyptic number.

It is an amenable number.

1242340132009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242340132009 is an equidigital number, since it uses as much as digits as its factorization.

1242340132009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 1242340132009 in words is "one trillion, two hundred forty-two billion, three hundred forty million, one hundred thirty-two thousand, nine".