68402120 has 32 divisors (see below), whose sum is σ = 158872320. Its totient is φ = 26477760.

The previous prime is 68402119. The next prime is 68402123. The reversal of 68402120 is 2120486.

It is not an unprimeable number, because it can be changed into a prime (68402123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26342 + ... + 28821.

It is an arithmetic number, because the mean of its divisors is an integer number (4964760).

Almost surely, 2^68402120 is an apocalyptic number.

It is an amenable number.

68402120 is an abundant number, since it is smaller than the sum of its proper divisors (90470200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68402120 is a wasteful number, since it uses less digits than its factorization.

68402120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55205 (or 55201 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 68402120 is about 8270.5574177319. The cubic root of 68402120 is about 408.9684956893.

The spelling of 68402120 in words is "sixty-eight million, four hundred two thousand, one hundred twenty".