1242312340042 has 16 divisors (see below), whose sum is σ = 1890889358400. Its totient is φ = 612026765280.

The previous prime is 1242312340021. The next prime is 1242312340043. The reversal of 1242312340042 is 2400432132421.

It is a super-3 number, since 3×1242312340042³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1242312340043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2490192 + ... + 2947147.

It is an arithmetic number, because the mean of its divisors is an integer number (118180584900).

Almost surely, 2^{1242312340042} is an apocalyptic number.

1242312340042 is a deficient number, since it is larger than the sum of its proper divisors (648577018358).

1242312340042 is a wasteful number, since it uses less digits than its factorization.

1242312340042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5439021.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1242312340042 its reverse (2400432132421), we get a palindrome (3642744472463).

The spelling of 1242312340042 in words is "one trillion, two hundred forty-two billion, three hundred twelve million, three hundred forty thousand, forty-two".