2440042523 has 4 divisors (see below), whose sum is σ = 2440143960. Its totient is φ = 2439941088.

The previous prime is 2440042489. The next prime is 2440042547. The reversal of 2440042523 is 3252400442.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3252400442 = 2 ⋅1626200221.

It is a cyclic number.

It is not a de Polignac number, because 2440042523 - 2¹⁸ = 2439780379 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2440042492 and 2440042501.

It is not an unprimeable number, because it can be changed into a prime (2440042573) 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, 8108 + ... + 70326.

It is an arithmetic number, because the mean of its divisors is an integer number (610035990).

Almost surely, 2^2440042523 is an apocalyptic number.

2440042523 is a deficient number, since it is larger than the sum of its proper divisors (101437).

2440042523 is an equidigital number, since it uses as much as digits as its factorization.

2440042523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101436.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 2440042523 is about 49396.7865655247. The cubic root of 2440042523 is about 1346.2709200560.

Adding to 2440042523 its reverse (3252400442), we get a palindrome (5692442965).

The spelling of 2440042523 in words is "two billion, four hundred forty million, forty-two thousand, five hundred twenty-three".