105450031442 has 64 divisors (see below), whose sum is σ = 196444051200. Its totient is φ = 42287793408.

The previous prime is 105450031441. The next prime is 105450031513. The reversal of 105450031442 is 244130054501.

It is a super-2 number, since 2×105450031442² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105450031441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1991393 + ... + 2043659.

It is an arithmetic number, because the mean of its divisors is an integer number (3069438300).

Almost surely, 2^105450031442 is an apocalyptic number.

105450031442 is a deficient number, since it is larger than the sum of its proper divisors (90994019758).

105450031442 is a wasteful number, since it uses less digits than its factorization.

105450031442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52480 (or 52466 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 105450031442 its reverse (244130054501), we get a palindrome (349580085943).

The spelling of 105450031442 in words is "one hundred five billion, four hundred fifty million, thirty-one thousand, four hundred forty-two".