100042165 has 8 divisors (see below), whose sum is σ = 120137400. Its totient is φ = 79975872.

The previous prime is 100042153. The next prime is 100042183. The reversal of 100042165 is 561240001.

It can be written as a sum of positive squares in 4 ways, for example, as 6765201 + 93276964 = 2601^2 + 9658^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100042165 - 2¹⁷ = 99911093 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1287 + ... + 14203.

It is an arithmetic number, because the mean of its divisors is an integer number (15017175).

Almost surely, 2^100042165 is an apocalyptic number.

It is an amenable number.

100042165 is a deficient number, since it is larger than the sum of its proper divisors (20095235).

100042165 is a wasteful number, since it uses less digits than its factorization.

100042165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14471.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 100042165 is about 10002.1080278109. The cubic root of 100042165 is about 464.2241117253.

Adding to 100042165 its reverse (561240001), we get a palindrome (661282166).

The spelling of 100042165 in words is "one hundred million, forty-two thousand, one hundred sixty-five".