240244421 has 4 divisors (see below), whose sum is σ = 240799692. Its totient is φ = 239689152.

The previous prime is 240244373. The next prime is 240244427. The reversal of 240244421 is 124442042.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37039396 + 203205025 = 6086^2 + 14255^2 .

It is a cyclic number.

It is not a de Polignac number, because 240244421 - 2¹⁸ = 239982277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240244427) 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, 276986 + ... + 277851.

It is an arithmetic number, because the mean of its divisors is an integer number (60199923).

Almost surely, 2^240244421 is an apocalyptic number.

It is an amenable number.

240244421 is a deficient number, since it is larger than the sum of its proper divisors (555271).

240244421 is an equidigital number, since it uses as much as digits as its factorization.

240244421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555270.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 240244421 is about 15499.8200312133. The cubic root of 240244421 is about 621.6573943022.

Adding to 240244421 its reverse (124442042), we get a palindrome (364686463).

The spelling of 240244421 in words is "two hundred forty million, two hundred forty-four thousand, four hundred twenty-one".