101800426 has 16 divisors (see below), whose sum is σ = 187939584. Its totient is φ = 40272624.

The previous prime is 101800409. The next prime is 101800481. The reversal of 101800426 is 624008101.

It is a junction number, because it is equal to n+sod(n) for n = 101800397 and 101800406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279490 + ... + 279853.

It is an arithmetic number, because the mean of its divisors is an integer number (11746224).

Almost surely, 2^101800426 is an apocalyptic number.

101800426 is a deficient number, since it is larger than the sum of its proper divisors (86139158).

101800426 is a wasteful number, since it uses less digits than its factorization.

101800426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559365.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 101800426 is about 10089.6197153312. The cubic root of 101800426 is about 466.9279433720.

Adding to 101800426 its reverse (624008101), we get a palindrome (725808527).

The spelling of 101800426 in words is "one hundred one million, eight hundred thousand, four hundred twenty-six".