42515122345 has 16 divisors (see below), whose sum is σ = 51155007552. Its totient is φ = 33920971200.

The previous prime is 42515122339. The next prime is 42515122471. The reversal of 42515122345 is 54322151524.

It is a happy number.

It is not a de Polignac number, because 42515122345 - 2¹⁷ = 42514991273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42515122345.

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, 3408370 + ... + 3420820.

It is an arithmetic number, because the mean of its divisors is an integer number (3197187972).

Almost surely, 2^42515122345 is an apocalyptic number.

It is an amenable number.

42515122345 is a deficient number, since it is larger than the sum of its proper divisors (8639885207).

42515122345 is a wasteful number, since it uses less digits than its factorization.

42515122345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14232.

The product of its digits is 48000, while the sum is 34.

Adding to 42515122345 its reverse (54322151524), we get a palindrome (96837273869).

The spelling of 42515122345 in words is "forty-two billion, five hundred fifteen million, one hundred twenty-two thousand, three hundred forty-five".