105045242 has 4 divisors (see below), whose sum is σ = 157567866. Its totient is φ = 52522620.

The previous prime is 105045211. The next prime is 105045247. The reversal of 105045242 is 242540501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242540501 = 7 ⋅34648643.

It can be written as a sum of positive squares in only one way, i.e., 98227921 + 6817321 = 9911^2 + 2611^2 .

It is a super-2 number, since 2×105045242² = 22069005733677128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105045247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26261309 + ... + 26261312.

Almost surely, 2^105045242 is an apocalyptic number.

105045242 is a deficient number, since it is larger than the sum of its proper divisors (52522624).

105045242 is an equidigital number, since it uses as much as digits as its factorization.

105045242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52522623.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 105045242 is about 10249.1581117670. The cubic root of 105045242 is about 471.8371463692.

Adding to 105045242 its sum of digits (23), we get a triangular number (105045265 = T₁₄₄₉₄).

Adding to 105045242 its reverse (242540501), we get a palindrome (347585743).

The spelling of 105045242 in words is "one hundred five million, forty-five thousand, two hundred forty-two".