140000401 has 4 divisors (see below), whose sum is σ = 142641972. Its totient is φ = 137358832.

The previous prime is 140000387. The next prime is 140000407. The reversal of 140000401 is 104000041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58982400 + 81018001 = 7680^2 + 9001^2 .

It is a cyclic number.

It is not a de Polignac number, because 140000401 - 2⁵ = 140000369 is a prime.

It is a super-2 number, since 2×140000401² = 39200224560321602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140000407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1320706 + ... + 1320811.

It is an arithmetic number, because the mean of its divisors is an integer number (35660493).

Almost surely, 2^140000401 is an apocalyptic number.

It is an amenable number.

140000401 is a deficient number, since it is larger than the sum of its proper divisors (2641571).

140000401 is an equidigital number, since it uses as much as digits as its factorization.

140000401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641570.

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

The square root of 140000401 is about 11832.1765115299. The cubic root of 140000401 is about 519.2499059442.

Adding to 140000401 its reverse (104000041), we get a palindrome (244000442).

It can be divided in two parts, 14000040 and 1, that added together give a palindrome (14000041).

The spelling of 140000401 in words is "one hundred forty million, four hundred one", and thus it is an aban number.