140403001 has 2 divisors, whose sum is σ = 140403002. Its totient is φ = 140403000.

The previous prime is 140402993. The next prime is 140403013. The reversal of 140403001 is 100304041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138297600 + 2105401 = 11760^2 + 1451^2 .

It is a cyclic number.

It is not a de Polignac number, because 140403001 - 2³ = 140402993 is a prime.

It is not a weakly prime, because it can be changed into another prime (140403031) 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, 70201500 + 70201501.

It is an arithmetic number, because the mean of its divisors is an integer number (70201501).

Almost surely, 2^140403001 is an apocalyptic number.

It is an amenable number.

140403001 is a deficient number, since it is larger than the sum of its proper divisors (1).

140403001 is an equidigital number, since it uses as much as digits as its factorization.

140403001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 140403001 is about 11849.1772288206. The cubic root of 140403001 is about 519.7471662886.

Adding to 140403001 its reverse (100304041), we get a palindrome (240707042).

The spelling of 140403001 in words is "one hundred forty million, four hundred three thousand, one".