42125244317 has 4 divisors (see below), whose sum is σ = 45365647740. Its totient is φ = 38884840896.

The previous prime is 42125244313. The next prime is 42125244323. The reversal of 42125244317 is 71344252124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22077799396 + 20047444921 = 148586^2 + 141589^2 .

It is a cyclic number.

It is not a de Polignac number, because 42125244317 - 2² = 42125244313 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42125244313) 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, 1620201692 + ... + 1620201717.

It is an arithmetic number, because the mean of its divisors is an integer number (11341411935).

Almost surely, 2^42125244317 is an apocalyptic number.

It is an amenable number.

42125244317 is a deficient number, since it is larger than the sum of its proper divisors (3240403423).

42125244317 is a wasteful number, since it uses less digits than its factorization.

42125244317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3240403422.

The product of its digits is 53760, while the sum is 35.

The spelling of 42125244317 in words is "forty-two billion, one hundred twenty-five million, two hundred forty-four thousand, three hundred seventeen".