42011544145 has 4 divisors (see below), whose sum is σ = 50413852980. Its totient is φ = 33609235312.

The previous prime is 42011544139. The next prime is 42011544167. The reversal of 42011544145 is 54144511024.

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 16336929856 + 25674614289 = 127816^2 + 160233^2 .

It is a cyclic number.

It is not a de Polignac number, because 42011544145 - 2¹⁹ = 42011019857 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, 4201154410 + ... + 4201154419.

It is an arithmetic number, because the mean of its divisors is an integer number (12603463245).

Almost surely, 2^42011544145 is an apocalyptic number.

It is an amenable number.

42011544145 is a deficient number, since it is larger than the sum of its proper divisors (8402308835).

42011544145 is an equidigital number, since it uses as much as digits as its factorization.

42011544145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8402308834.

The product of its (nonzero) digits is 12800, while the sum is 31.

The spelling of 42011544145 in words is "forty-two billion, eleven million, five hundred forty-four thousand, one hundred forty-five".