4240355123 has 4 divisors (see below), whose sum is σ = 4240834608. Its totient is φ = 4239875640.

The previous prime is 4240355111. The next prime is 4240355129. The reversal of 4240355123 is 3215530424.

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 4240355123 - 2⁴ = 4240355107 is a prime.

It is a super-2 number, since 2×4240355123² = 35961223138304690258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4240355129) 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, 226223 + ... + 244248.

It is an arithmetic number, because the mean of its divisors is an integer number (1060208652).

Almost surely, 2^4240355123 is an apocalyptic number.

4240355123 is a deficient number, since it is larger than the sum of its proper divisors (479485).

4240355123 is an equidigital number, since it uses as much as digits as its factorization.

4240355123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479484.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 4240355123 is about 65118.0092063632. The cubic root of 4240355123 is about 1618.5796526656.

Adding to 4240355123 its reverse (3215530424), we get a palindrome (7455885547).

The spelling of 4240355123 in words is "four billion, two hundred forty million, three hundred fifty-five thousand, one hundred twenty-three".