42101757 has 6 divisors (see below), whose sum is σ = 60813662. Its totient is φ = 28067832.

The previous prime is 42101737. The next prime is 42101767. The reversal of 42101757 is 75710124.

It can be written as a sum of positive squares in only one way, i.e., 41139396 + 962361 = 6414^2 + 981^2 .

It is not a de Polignac number, because 42101757 - 2⁶ = 42101693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42101757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42101737) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2338978 + ... + 2338995.

Almost surely, 2^42101757 is an apocalyptic number.

It is an amenable number.

42101757 is a deficient number, since it is larger than the sum of its proper divisors (18711905).

42101757 is a wasteful number, since it uses less digits than its factorization.

42101757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4677979 (or 4677976 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 42101757 is about 6488.5866719957. The cubic root of 42101757 is about 347.8831603399.

The spelling of 42101757 in words is "forty-two million, one hundred one thousand, seven hundred fifty-seven".