40100165 has 32 divisors (see below), whose sum is σ = 59166720. Its totient is φ = 25475904.

The previous prime is 40100149. The next prime is 40100167. The reversal of 40100165 is 56100104.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40100165 - 2⁴ = 40100149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40100167) 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, 30614 + ... + 31896.

It is an arithmetic number, because the mean of its divisors is an integer number (1848960).

Almost surely, 2^40100165 is an apocalyptic number.

It is an amenable number.

40100165 is a deficient number, since it is larger than the sum of its proper divisors (19066555).

40100165 is a wasteful number, since it uses less digits than its factorization.

40100165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 40100165 is about 6332.4691077020. The cubic root of 40100165 is about 342.2804176197.

Adding to 40100165 its reverse (56100104), we get a palindrome (96200269).

The spelling of 40100165 in words is "forty million, one hundred thousand, one hundred sixty-five".