140430401 has 2 divisors, whose sum is σ = 140430402. Its totient is φ = 140430400.

The previous prime is 140430379. The next prime is 140430431. The reversal of 140430401 is 104034041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135117376 + 5313025 = 11624^2 + 2305^2 .

It is an emirp because it is prime and its reverse (104034041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140430401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140430401.

It is not a weakly prime, because it can be changed into another prime (140430431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70215200 + 70215201.

It is an arithmetic number, because the mean of its divisors is an integer number (70215201).

Almost surely, 2^140430401 is an apocalyptic number.

It is an amenable number.

140430401 is a deficient number, since it is larger than the sum of its proper divisors (1).

140430401 is an equidigital number, since it uses as much as digits as its factorization.

140430401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 140430401 is about 11850.3333708381. Note that the first 4 decimals coincide. The cubic root of 140430401 is about 519.7809740799.

Adding to 140430401 its reverse (104034041), we get a palindrome (244464442).

The spelling of 140430401 in words is "one hundred forty million, four hundred thirty thousand, four hundred one".