42004125145 has 4 divisors (see below), whose sum is σ = 50404950180. Its totient is φ = 33603300112.

The previous prime is 42004125109. The next prime is 42004125193. The reversal of 42004125145 is 54152140024.

42004125145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 18024673536 + 23979451609 = 134256^2 + 154853^2 .

It is a cyclic number.

It is not a de Polignac number, because 42004125145 - 2¹¹ = 42004123097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4200412510 + ... + 4200412519.

It is an arithmetic number, because the mean of its divisors is an integer number (12601237545).

Almost surely, 2^42004125145 is an apocalyptic number.

It is an amenable number.

42004125145 is a deficient number, since it is larger than the sum of its proper divisors (8400825035).

42004125145 is an equidigital number, since it uses as much as digits as its factorization.

42004125145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8400825034.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 42004125145 its reverse (54152140024), we get a palindrome (96156265169).

The spelling of 42004125145 in words is "forty-two billion, four million, one hundred twenty-five thousand, one hundred forty-five".