40821103 has 4 divisors (see below), whose sum is σ = 41114920. Its totient is φ = 40527288.

The previous prime is 40821091. The next prime is 40821107. The reversal of 40821103 is 30112804.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40821103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40821107) 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, 146700 + ... + 146977.

It is an arithmetic number, because the mean of its divisors is an integer number (10278730).

Almost surely, 2^40821103 is an apocalyptic number.

40821103 is a deficient number, since it is larger than the sum of its proper divisors (293817).

40821103 is a wasteful number, since it uses less digits than its factorization.

40821103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293816.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 40821103 is about 6389.1394569222. The cubic root of 40821103 is about 344.3194678480.

Adding to 40821103 its reverse (30112804), we get a palindrome (70933907).

The spelling of 40821103 in words is "forty million, eight hundred twenty-one thousand, one hundred three".