40105603 has 4 divisors (see below), whose sum is σ = 40138240. Its totient is φ = 40072968.

The previous prime is 40105553. The next prime is 40105619. The reversal of 40105603 is 30650104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40105603 - 2¹³ = 40097411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40105643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14400 + ... + 16957.

It is an arithmetic number, because the mean of its divisors is an integer number (10034560).

Almost surely, 2^40105603 is an apocalyptic number.

40105603 is a deficient number, since it is larger than the sum of its proper divisors (32637).

40105603 is a wasteful number, since it uses less digits than its factorization.

40105603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32636.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 40105603 is about 6332.8984675265. The cubic root of 40105603 is about 342.2958891835.

Adding to 40105603 its reverse (30650104), we get a palindrome (70755707).

The spelling of 40105603 in words is "forty million, one hundred five thousand, six hundred three".