240444042421 has 8 divisors (see below), whose sum is σ = 269391851424. Its totient is φ = 212677776720.

The previous prime is 240444042413. The next prime is 240444042467. The reversal of 240444042421 is 124240444042.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 240444042421 - 2³ = 240444042413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240444042401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295385395 + ... + 295386208.

It is an arithmetic number, because the mean of its divisors is an integer number (33673981428).

Almost surely, 2^240444042421 is an apocalyptic number.

It is an amenable number.

240444042421 is a deficient number, since it is larger than the sum of its proper divisors (28947809003).

240444042421 is a wasteful number, since it uses less digits than its factorization.

240444042421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590771651.

The product of its (nonzero) digits is 32768, while the sum is 31.

Adding to 240444042421 its reverse (124240444042), we get a palindrome (364684486463).

The spelling of 240444042421 in words is "two hundred forty billion, four hundred forty-four million, forty-two thousand, four hundred twenty-one".