105442241545 has 4 divisors (see below), whose sum is σ = 126530689860. Its totient is φ = 84353793232.

The previous prime is 105442241539. The next prime is 105442241563. The reversal of 105442241545 is 545142244501.

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 59452581241 + 45989660304 = 243829^2 + 214452^2 .

It is a cyclic number.

It is not a de Polignac number, because 105442241545 - 2²⁷ = 105308023817 is a prime.

It is a super-2 number, since 2×105442241545² (a number of 23 digits) contains 22 as substring.

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, 10544224150 + ... + 10544224159.

It is an arithmetic number, because the mean of its divisors is an integer number (31632672465).

Almost surely, 2^105442241545 is an apocalyptic number.

It is an amenable number.

105442241545 is a deficient number, since it is larger than the sum of its proper divisors (21088448315).

105442241545 is an equidigital number, since it uses as much as digits as its factorization.

105442241545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21088448314.

The product of its (nonzero) digits is 128000, while the sum is 37.

The spelling of 105442241545 in words is "one hundred five billion, four hundred forty-two million, two hundred forty-one thousand, five hundred forty-five".