105345244442 has 4 divisors (see below), whose sum is σ = 158017866666. Its totient is φ = 52672622220.

The previous prime is 105345244439. The next prime is 105345244541. The reversal of 105345244442 is 244442543501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244442543501 = 13 ⋅18803272577.

It can be written as a sum of positive squares in only one way, i.e., 96627100801 + 8718143641 = 310849^2 + 93371^2 .

It is a super-2 number, since 2×105345244442² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105345244396 and 105345244405.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26336311109 + ... + 26336311112.

Almost surely, 2^105345244442 is an apocalyptic number.

105345244442 is a deficient number, since it is larger than the sum of its proper divisors (52672622224).

105345244442 is an equidigital number, since it uses as much as digits as its factorization.

105345244442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52672622223.

The product of its (nonzero) digits is 307200, while the sum is 38.

Adding to 105345244442 its reverse (244442543501), we get a palindrome (349787787943).

The spelling of 105345244442 in words is "one hundred five billion, three hundred forty-five million, two hundred forty-four thousand, four hundred forty-two".