40020603 has 12 divisors (see below), whose sum is σ = 62073000. Its totient is φ = 22868832.

The previous prime is 40020599. The next prime is 40020611. The reversal of 40020603 is 30602004.

It is not a de Polignac number, because 40020603 - 2² = 40020599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40020103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135978 + ... + 136271.

It is an arithmetic number, because the mean of its divisors is an integer number (5172750).

Almost surely, 2^40020603 is an apocalyptic number.

40020603 is a deficient number, since it is larger than the sum of its proper divisors (22052397).

40020603 is a wasteful number, since it uses less digits than its factorization.

40020603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272266 (or 272259 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 40020603 is about 6326.1839208167. The cubic root of 40020603 is about 342.0538969809.

Adding to 40020603 its reverse (30602004), we get a palindrome (70622607).

The spelling of 40020603 in words is "forty million, twenty thousand, six hundred three".