42140868 has 96 divisors (see below), whose sum is σ = 124830720. Its totient is φ = 10746240.

The previous prime is 42140867. The next prime is 42140869. The reversal of 42140868 is 86804124.

It is an interprime number because it is at equal distance from previous prime (42140867) and next prime (42140869).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (42140867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54130 + ... + 54902.

It is an arithmetic number, because the mean of its divisors is an integer number (1300320).

Almost surely, 2^42140868 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 42140868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62415360).

42140868 is an abundant number, since it is smaller than the sum of its proper divisors (82689852).

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

42140868 is a wasteful number, since it uses less digits than its factorization.

42140868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 855 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 42140868 is about 6491.5998028221. The cubic root of 42140868 is about 347.9908505984.

The spelling of 42140868 in words is "forty-two million, one hundred forty thousand, eight hundred sixty-eight".