42101768 has 8 divisors (see below), whose sum is σ = 78940830. Its totient is φ = 21050880.

The previous prime is 42101767. The next prime is 42101779. The reversal of 42101768 is 86710124.

It can be written as a sum of positive squares in only one way, i.e., 27646564 + 14455204 = 5258^2 + 3802^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 42101768.

It is not an unprimeable number, because it can be changed into a prime (42101767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2631353 + ... + 2631368.

Almost surely, 2^42101768 is an apocalyptic number.

It is an amenable number.

42101768 is a deficient number, since it is larger than the sum of its proper divisors (36839062).

42101768 is a wasteful number, since it uses less digits than its factorization.

42101768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5262727 (or 5262723 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 42101768 is about 6488.5875196378. The cubic root of 42101768 is about 347.8831906373.

The spelling of 42101768 in words is "forty-two million, one hundred one thousand, seven hundred sixty-eight".