42011270020145 has 4 divisors (see below), whose sum is σ = 50413524024180. Its totient is φ = 33609016016112.

The previous prime is 42011270020121. The next prime is 42011270020183. The reversal of 42011270020145 is 54102007211024.

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 31009795998736 + 11001474021409 = 5568644^2 + 3316847^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42011270020145 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, 4201127002010 + ... + 4201127002019.

It is an arithmetic number, because the mean of its divisors is an integer number (12603381006045).

Almost surely, 2^{42011270020145} is an apocalyptic number.

It is an amenable number.

42011270020145 is a deficient number, since it is larger than the sum of its proper divisors (8402254004035).

42011270020145 is an equidigital number, since it uses as much as digits as its factorization.

42011270020145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8402254004034.

The product of its (nonzero) digits is 4480, while the sum is 29.

Adding to 42011270020145 its reverse (54102007211024), we get a palindrome (96113277231169).

The spelling of 42011270020145 in words is "forty-two trillion, eleven billion, two hundred seventy million, twenty thousand, one hundred forty-five".