42123432125 has 32 divisors (see below), whose sum is σ = 52923746304. Its totient is φ = 33472588800.

The previous prime is 42123432101. The next prime is 42123432137. The reversal of 42123432125 is 52123432124.

It is not a de Polignac number, because 42123432125 - 2²⁰ = 42122383549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26609084 + ... + 26610666.

It is an arithmetic number, because the mean of its divisors is an integer number (1653867072).

Almost surely, 2^42123432125 is an apocalyptic number.

It is an amenable number.

42123432125 is a deficient number, since it is larger than the sum of its proper divisors (10800314179).

42123432125 is a wasteful number, since it uses less digits than its factorization.

42123432125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2894 (or 2884 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

Adding to 42123432125 its reverse (52123432124), we get a palindrome (94246864249).

Subtracting 42123432125 from its reverse (52123432124), we obtain a palindrome (9999999999).

The spelling of 42123432125 in words is "forty-two billion, one hundred twenty-three million, four hundred thirty-two thousand, one hundred twenty-five".