68400342 has 64 divisors (see below), whose sum is σ = 161376000. Its totient is φ = 21415104.

The previous prime is 68400317. The next prime is 68400373. The reversal of 68400342 is 24300486.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 167034 + ... + 167442.

It is an arithmetic number, because the mean of its divisors is an integer number (2521500).

Almost surely, 2^68400342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68400342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80688000).

68400342 is an abundant number, since it is smaller than the sum of its proper divisors (92975658).

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

68400342 is a wasteful number, since it uses less digits than its factorization.

68400342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 596 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 68400342 is about 8270.4499273014. The cubic root of 68400342 is about 408.9649521720.

The spelling of 68400342 in words is "sixty-eight million, four hundred thousand, three hundred forty-two".