120343243987 has 2 divisors, whose sum is σ = 120343243988. Its totient is φ = 120343243986.

The previous prime is 120343243949. The next prime is 120343244051. The reversal of 120343243987 is 789342343021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120343243987 - 2¹¹ = 120343241939 is a prime.

It is a super-2 number, since 2×120343243987² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120343243387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60171621993 + 60171621994.

It is an arithmetic number, because the mean of its divisors is an integer number (60171621994).

Almost surely, 2^120343243987 is an apocalyptic number.

120343243987 is a deficient number, since it is larger than the sum of its proper divisors (1).

120343243987 is an equidigital number, since it uses as much as digits as its factorization.

120343243987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 120343243987 in words is "one hundred twenty billion, three hundred forty-three million, two hundred forty-three thousand, nine hundred eighty-seven".