240005401 has 2 divisors, whose sum is σ = 240005402. Its totient is φ = 240005400.

The previous prime is 240005399. The next prime is 240005411. The reversal of 240005401 is 104500042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223203600 + 16801801 = 14940^2 + 4099^2 .

It is a cyclic number.

It is not a de Polignac number, because 240005401 - 2¹ = 240005399 is a prime.

Together with 240005399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (240005411) 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, 120002700 + 120002701.

It is an arithmetic number, because the mean of its divisors is an integer number (120002701).

Almost surely, 2^240005401 is an apocalyptic number.

It is an amenable number.

240005401 is a deficient number, since it is larger than the sum of its proper divisors (1).

240005401 is an equidigital number, since it uses as much as digits as its factorization.

240005401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 240005401 is about 15492.1077003744. The cubic root of 240005401 is about 621.4511628677.

Adding to 240005401 its reverse (104500042), we get a palindrome (344505443).

The spelling of 240005401 in words is "two hundred forty million, five thousand, four hundred one".