105640426 has 16 divisors (see below), whose sum is σ = 166567104. Its totient is φ = 50151904.

The previous prime is 105640421. The next prime is 105640427. The reversal of 105640426 is 624046501.

It is a super-2 number, since 2×105640426² = 22319799210922952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105640394 and 105640403.

It is not an unprimeable number, because it can be changed into a prime (105640421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2080 + ... + 14683.

It is an arithmetic number, because the mean of its divisors is an integer number (10410444).

Almost surely, 2^105640426 is an apocalyptic number.

105640426 is a deficient number, since it is larger than the sum of its proper divisors (60926678).

105640426 is a wasteful number, since it uses less digits than its factorization.

105640426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16925.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 105640426 is about 10278.1528496126. The cubic root of 105640426 is about 472.7266081733.

Adding to 105640426 its reverse (624046501), we get a palindrome (729686927).

The spelling of 105640426 in words is "one hundred five million, six hundred forty thousand, four hundred twenty-six".