4240123342545 has 16 divisors (see below), whose sum is σ = 6824821288320. Its totient is φ = 2247857802624.

The previous prime is 4240123342537. The next prime is 4240123342577. The reversal of 4240123342545 is 5452433210424.

It is not a de Polignac number, because 4240123342545 - 2³ = 4240123342537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 846329500 + ... + 846334509.

It is an arithmetic number, because the mean of its divisors is an integer number (426551330520).

Almost surely, 2^{4240123342545} is an apocalyptic number.

It is an amenable number.

4240123342545 is a deficient number, since it is larger than the sum of its proper divisors (2584697945775).

4240123342545 is a wasteful number, since it uses less digits than its factorization.

4240123342545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692664184.

The product of its (nonzero) digits is 460800, while the sum is 39.

Adding to 4240123342545 its reverse (5452433210424), we get a palindrome (9692556552969).

The spelling of 4240123342545 in words is "four trillion, two hundred forty billion, one hundred twenty-three million, three hundred forty-two thousand, five hundred forty-five".