240401923 has 4 divisors (see below), whose sum is σ = 240605640. Its totient is φ = 240198208.

The previous prime is 240401893. The next prime is 240401933. The reversal of 240401923 is 329104042.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 329104042 = 2 ⋅164552021.

It is a cyclic number.

It is not a de Polignac number, because 240401923 - 2¹⁷ = 240270851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240401933) 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 in 3 ways as a sum of consecutive naturals, for example, 100078 + ... + 102451.

It is an arithmetic number, because the mean of its divisors is an integer number (60151410).

Almost surely, 2^240401923 is an apocalyptic number.

240401923 is a deficient number, since it is larger than the sum of its proper divisors (203717).

240401923 is a wasteful number, since it uses less digits than its factorization.

240401923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203716.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 240401923 is about 15504.8999674297. The cubic root of 240401923 is about 621.7932155539.

Adding to 240401923 its reverse (329104042), we get a palindrome (569505965).

It can be divided in two parts, 2404019 and 23, that added together give a palindrome (2404042).

The spelling of 240401923 in words is "two hundred forty million, four hundred one thousand, nine hundred twenty-three".