240020401 has 2 divisors, whose sum is σ = 240020402. Its totient is φ = 240020400.

The previous prime is 240020393. The next prime is 240020413. The reversal of 240020401 is 104020042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144000000 + 96020401 = 12000^2 + 9799^2 .

It is a cyclic number.

It is not a de Polignac number, because 240020401 - 2³ = 240020393 is a prime.

It is not a weakly prime, because it can be changed into another prime (240020461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120010200 + 120010201.

It is an arithmetic number, because the mean of its divisors is an integer number (120010201).

Almost surely, 2^240020401 is an apocalyptic number.

It is an amenable number.

240020401 is a deficient number, since it is larger than the sum of its proper divisors (1).

240020401 is an equidigital number, since it uses as much as digits as its factorization.

240020401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 240020401 is about 15492.5918102815. The cubic root of 240020401 is about 621.4641092059.

Adding to 240020401 its reverse (104020042), we get a palindrome (344040443).

It can be divided in two parts, 2400 and 20401, that added together give a square (22801 = 151²).

The spelling of 240020401 in words is "two hundred forty million, twenty thousand, four hundred one".