40120068 has 48 divisors (see below), whose sum is σ = 99731520. Its totient is φ = 12509184.

The previous prime is 40120063. The next prime is 40120081. The reversal of 40120068 is 86002104.

It is not an unprimeable number, because it can be changed into a prime (40120063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38863 + ... + 39881.

It is an arithmetic number, because the mean of its divisors is an integer number (2077740).

Almost surely, 2^40120068 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40120068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49865760).

40120068 is an abundant number, since it is smaller than the sum of its proper divisors (59611452).

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

40120068 is a wasteful number, since it uses less digits than its factorization.

40120068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236 (or 1234 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 40120068 is about 6334.0404166693. The cubic root of 40120068 is about 342.3370365089.

The spelling of 40120068 in words is "forty million, one hundred twenty thousand, sixty-eight".