40203101 has 2 divisors, whose sum is σ = 40203102. Its totient is φ = 40203100.

The previous prime is 40203091. The next prime is 40203133. The reversal of 40203101 is 10130204.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28879876 + 11323225 = 5374^2 + 3365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40203101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40203161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20101550 + 20101551.

It is an arithmetic number, because the mean of its divisors is an integer number (20101551).

Almost surely, 2^40203101 is an apocalyptic number.

It is an amenable number.

40203101 is a deficient number, since it is larger than the sum of its proper divisors (1).

40203101 is an equidigital number, since it uses as much as digits as its factorization.

40203101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 40203101 is about 6340.5915339186. The cubic root of 40203101 is about 342.5730421233.

Adding to 40203101 its reverse (10130204), we get a palindrome (50333305).

It can be divided in two parts, 40203 and 101, that added together give a palindrome (40304).

The spelling of 40203101 in words is "forty million, two hundred three thousand, one hundred one".