105445531042 has 4 divisors (see below), whose sum is σ = 158168296566. Its totient is φ = 52722765520.

The previous prime is 105445531031. The next prime is 105445531073. The reversal of 105445531042 is 240135544501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 89639761201 + 15805769841 = 299399^2 + 125721^2 .

It is a super-2 number, since 2×105445531042² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105445530989 and 105445531007.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26361382759 + ... + 26361382762.

Almost surely, 2^105445531042 is an apocalyptic number.

105445531042 is a deficient number, since it is larger than the sum of its proper divisors (52722765524).

105445531042 is an equidigital number, since it uses as much as digits as its factorization.

105445531042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52722765523.

The product of its (nonzero) digits is 48000, while the sum is 34.

The spelling of 105445531042 in words is "one hundred five billion, four hundred forty-five million, five hundred thirty-one thousand, forty-two".