40103145 has 24 divisors (see below), whose sum is σ = 72536256. Its totient is φ = 20457888.

The previous prime is 40103113. The next prime is 40103179. The reversal of 40103145 is 54130104.

It is a happy number.

It is not a de Polignac number, because 40103145 - 2⁵ = 40103113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18339 + ... + 20408.

It is an arithmetic number, because the mean of its divisors is an integer number (3022344).

Almost surely, 2^40103145 is an apocalyptic number.

40103145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40103145 is a deficient number, since it is larger than the sum of its proper divisors (32433111).

40103145 is a wasteful number, since it uses less digits than its factorization.

40103145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38781 (or 38778 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 40103145 is about 6332.7043985962. The cubic root of 40103145 is about 342.2888961416.

Adding to 40103145 its reverse (54130104), we get a palindrome (94233249).

The spelling of 40103145 in words is "forty million, one hundred three thousand, one hundred forty-five".