40123001 has 2 divisors, whose sum is σ = 40123002. Its totient is φ = 40123000.

The previous prime is 40122923. The next prime is 40123049. The reversal of 40123001 is 10032104.

It is a happy number.

40123001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36421225 + 3701776 = 6035^2 + 1924^2 .

It is a cyclic number.

It is not a de Polignac number, because 40123001 - 2¹⁸ = 39860857 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40123301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20061500 + 20061501.

It is an arithmetic number, because the mean of its divisors is an integer number (20061501).

Almost surely, 2^40123001 is an apocalyptic number.

It is an amenable number.

40123001 is a deficient number, since it is larger than the sum of its proper divisors (1).

40123001 is an equidigital number, since it uses as much as digits as its factorization.

40123001 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 40123001 is about 6334.2719392208. The cubic root of 40123001 is about 342.3453785524.

Adding to 40123001 its reverse (10032104), we get a palindrome (50155105).

The spelling of 40123001 in words is "forty million, one hundred twenty-three thousand, one".