1242309036345 has 32 divisors (see below), whose sum is σ = 2141960604672. Its totient is φ = 611207845632.

The previous prime is 1242309036307. The next prime is 1242309036347. The reversal of 1242309036345 is 5436309032421.

It is not a de Polignac number, because 1242309036345 - 2¹⁹ = 1242308512057 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1242309036297 and 1242309036306.

It is not an unprimeable number, because it can be changed into a prime (1242309036347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1727242 + ... + 2338371.

It is an arithmetic number, because the mean of its divisors is an integer number (66936268896).

Almost surely, 2^{1242309036345} is an apocalyptic number.

1242309036345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1242309036345 is a deficient number, since it is larger than the sum of its proper divisors (899651568327).

1242309036345 is a wasteful number, since it uses less digits than its factorization.

1242309036345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4067201.

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 1242309036345 in words is "one trillion, two hundred forty-two billion, three hundred nine million, thirty-six thousand, three hundred forty-five".