40640103 has 32 divisors (see below), whose sum is σ = 71808000. Its totient is φ = 22210848.

The previous prime is 40640053. The next prime is 40640113. The reversal of 40640103 is 30104604.

It is not a de Polignac number, because 40640103 - 2¹² = 40636007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40640113) 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, 328 + ... + 9021.

It is an arithmetic number, because the mean of its divisors is an integer number (2244000).

Almost surely, 2^40640103 is an apocalyptic number.

40640103 is a deficient number, since it is larger than the sum of its proper divisors (31167897).

40640103 is a wasteful number, since it uses less digits than its factorization.

40640103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9388 (or 9382 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40640103 is about 6374.9590586921. The cubic root of 40640103 is about 343.8098118292.

Adding to 40640103 its reverse (30104604), we get a palindrome (70744707).

The spelling of 40640103 in words is "forty million, six hundred forty thousand, one hundred three".