105542420023 has 4 divisors (see below), whose sum is σ = 105545322288. Its totient is φ = 105539517760.

The previous prime is 105542419993. The next prime is 105542420029. The reversal of 105542420023 is 320024245501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320024245501 = 1373 ⋅233083937.

It is a cyclic number.

It is not a de Polignac number, because 105542420023 - 2⁹ = 105542419511 is a prime.

It is a super-2 number, since 2×105542420023² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105542419973 and 105542420000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105542420029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1395883 + ... + 1469548.

It is an arithmetic number, because the mean of its divisors is an integer number (26386330572).

Almost surely, 2^105542420023 is an apocalyptic number.

105542420023 is a deficient number, since it is larger than the sum of its proper divisors (2902265).

105542420023 is an equidigital number, since it uses as much as digits as its factorization.

105542420023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2902264.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 105542420023 its reverse (320024245501), we get a palindrome (425566665524).

The spelling of 105542420023 in words is "one hundred five billion, five hundred forty-two million, four hundred twenty thousand, twenty-three".