4042123444025 has 6 divisors (see below), whose sum is σ = 5012233070622. Its totient is φ = 3233698755200.

The previous prime is 4042123444001. The next prime is 4042123444039. The reversal of 4042123444025 is 5204443212404.

It can be written as a sum of positive squares in 3 ways, for example, as 3679514281 + 4038443929744 = 60659^2 + 2009588^2 .

It is not a de Polignac number, because 4042123444025 - 2⁸ = 4042123443769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80842468856 + ... + 80842468905.

It is an arithmetic number, because the mean of its divisors is an integer number (835372178437).

Almost surely, 2^{4042123444025} is an apocalyptic number.

It is an amenable number.

4042123444025 is a deficient number, since it is larger than the sum of its proper divisors (970109626597).

4042123444025 is a wasteful number, since it uses less digits than its factorization.

4042123444025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161684937771 (or 161684937766 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 35.

Adding to 4042123444025 its reverse (5204443212404), we get a palindrome (9246566656429).

The spelling of 4042123444025 in words is "four trillion, forty-two billion, one hundred twenty-three million, four hundred forty-four thousand, twenty-five".