240420010423 has 4 divisors (see below), whose sum is σ = 248710355640. Its totient is φ = 232129665208.

The previous prime is 240420010387. The next prime is 240420010463. The reversal of 240420010423 is 324010024042.

It is a happy number.

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 240420010423 - 2⁹ = 240420009911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 240420010394 and 240420010403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240420010463) 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, 4145172565 + ... + 4145172622.

It is an arithmetic number, because the mean of its divisors is an integer number (62177588910).

Almost surely, 2^240420010423 is an apocalyptic number.

240420010423 is a deficient number, since it is larger than the sum of its proper divisors (8290345217).

240420010423 is an equidigital number, since it uses as much as digits as its factorization.

240420010423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8290345216.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 240420010423 its reverse (324010024042), we get a palindrome (564430034465).

The spelling of 240420010423 in words is "two hundred forty billion, four hundred twenty million, ten thousand, four hundred twenty-three".