240123401 has 4 divisors (see below), whose sum is σ = 274426752. Its totient is φ = 205820052.

The previous prime is 240123397. The next prime is 240123407. The reversal of 240123401 is 104321042.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 240123401 - 2² = 240123397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 240123401.

It is not an unprimeable number, because it can be changed into a prime (240123407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17151665 + ... + 17151678.

It is an arithmetic number, because the mean of its divisors is an integer number (68606688).

Almost surely, 2^240123401 is an apocalyptic number.

It is an amenable number.

240123401 is a deficient number, since it is larger than the sum of its proper divisors (34303351).

240123401 is an equidigital number, since it uses as much as digits as its factorization.

240123401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34303350.

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

The square root of 240123401 is about 15495.9156231570. The cubic root of 240123401 is about 621.5529928297.

Adding to 240123401 its reverse (104321042), we get a palindrome (344444443).

The spelling of 240123401 in words is "two hundred forty million, one hundred twenty-three thousand, four hundred one".