140401 has 2 divisors, whose sum is σ = 140402. Its totient is φ = 140400.

The previous prime is 140381. The next prime is 140407. The reversal of 140401 is 104041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78400 + 62001 = 280^2 + 249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140401 is a prime.

It is not a weakly prime, because it can be changed into another prime (140407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70200 + 70201.

It is an arithmetic number, because the mean of its divisors is an integer number (70201).

2¹⁴⁰⁴⁰¹ is an apocalyptic number.

It is an amenable number.

140401 is a deficient number, since it is larger than the sum of its proper divisors (1).

140401 is an equidigital number, since it uses as much as digits as its factorization.

140401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 140401 is about 374.7012143028. The cubic root of 140401 is about 51.9744697160.

Adding to 140401 its reverse (104041), we get a palindrome (244442).

It can be divided in two parts, 14040 and 1, that added together give a palindrome (14041).

The spelling of 140401 in words is "one hundred forty thousand, four hundred one", and thus it is an iban number.