120402643 has 2 divisors, whose sum is σ = 120402644. Its totient is φ = 120402642.

The previous prime is 120402641. The next prime is 120402679. The reversal of 120402643 is 346204021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120402643 - 2¹ = 120402641 is a prime.

Together with 120402641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (120402641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60201321 + 60201322.

It is an arithmetic number, because the mean of its divisors is an integer number (60201322).

Almost surely, 2^120402643 is an apocalyptic number.

120402643 is a deficient number, since it is larger than the sum of its proper divisors (1).

120402643 is an equidigital number, since it uses as much as digits as its factorization.

120402643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 120402643 is about 10972.8138141500. The cubic root of 120402643 is about 493.7934673477.

Adding to 120402643 its reverse (346204021), we get a palindrome (466606664).

The spelling of 120402643 in words is "one hundred twenty million, four hundred two thousand, six hundred forty-three".