240123043 has 4 divisors (see below), whose sum is σ = 241153848. Its totient is φ = 239092240.

The previous prime is 240123041. The next prime is 240123049. The reversal of 240123043 is 340321042.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 240123043 - 2¹ = 240123041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240123043.

It is not an unprimeable number, because it can be changed into a prime (240123041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515053 + ... + 515518.

It is an arithmetic number, because the mean of its divisors is an integer number (60288462).

Almost surely, 2^240123043 is an apocalyptic number.

240123043 is a deficient number, since it is larger than the sum of its proper divisors (1030805).

240123043 is a wasteful number, since it uses less digits than its factorization.

240123043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030804.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 240123043 is about 15495.9040717217. The cubic root of 240123043 is about 621.5526839384.

Adding to 240123043 its reverse (340321042), we get a palindrome (580444085).

The spelling of 240123043 in words is "two hundred forty million, one hundred twenty-three thousand, forty-three".