40145105 has 48 divisors (see below), whose sum is σ = 65142144. Its totient is φ = 23063040.

The previous prime is 40145089. The next prime is 40145113. The reversal of 40145105 is 50154104.

It is not a de Polignac number, because 40145105 - 2⁴ = 40145089 is a prime.

It is a super-2 number, since 2×40145105² = 3223258910922050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64757 + ... + 65373.

It is an arithmetic number, because the mean of its divisors is an integer number (1357128).

Almost surely, 2^40145105 is an apocalyptic number.

It is an amenable number.

40145105 is a deficient number, since it is larger than the sum of its proper divisors (24997039).

40145105 is a wasteful number, since it uses less digits than its factorization.

40145105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 40145105 is about 6336.0164930341. The cubic root of 40145105 is about 342.4082337134.

Adding to 40145105 its reverse (50154104), we get a palindrome (90299209).

It can be divided in two parts, 4014 and 5105, that added together give a palindrome (9119).

The spelling of 40145105 in words is "forty million, one hundred forty-five thousand, one hundred five".