2421440431 has 4 divisors (see below), whose sum is σ = 2432916664. Its totient is φ = 2409964200.

The previous prime is 2421440429. The next prime is 2421440477. The reversal of 2421440431 is 1340441242.

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 2421440431 - 2¹ = 2421440429 is a prime.

It is a super-2 number, since 2×2421440431² = 11726747521762931522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2421440396 and 2421440405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421440531) 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, 5737800 + ... + 5738221.

It is an arithmetic number, because the mean of its divisors is an integer number (608229166).

Almost surely, 2^2421440431 is an apocalyptic number.

2421440431 is a deficient number, since it is larger than the sum of its proper divisors (11476233).

2421440431 is a wasteful number, since it uses less digits than its factorization.

2421440431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11476232.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 2421440431 is about 49208.1337890394. The cubic root of 2421440431 is about 1342.8410115940.

Adding to 2421440431 its reverse (1340441242), we get a palindrome (3761881673).

The spelling of 2421440431 in words is "two billion, four hundred twenty-one million, four hundred forty thousand, four hundred thirty-one".