105420743426 has 4 divisors (see below), whose sum is σ = 158131115142. Its totient is φ = 52710371712.

The previous prime is 105420743423. The next prime is 105420743453. The reversal of 105420743426 is 624347024501.

It is a happy number.

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., 64973500201 + 40447243225 = 254899^2 + 201115^2 .

It is a super-2 number, since 2×105420743426² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 105420743426.

It is not an unprimeable number, because it can be changed into a prime (105420743423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26355185855 + ... + 26355185858.

Almost surely, 2^105420743426 is an apocalyptic number.

105420743426 is a deficient number, since it is larger than the sum of its proper divisors (52710371716).

105420743426 is an equidigital number, since it uses as much as digits as its factorization.

105420743426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52710371715.

The product of its (nonzero) digits is 161280, while the sum is 38.

Adding to 105420743426 its reverse (624347024501), we get a palindrome (729767767927).

The spelling of 105420743426 in words is "one hundred five billion, four hundred twenty million, seven hundred forty-three thousand, four hundred twenty-six".