100423426 has 4 divisors (see below), whose sum is σ = 150635142. Its totient is φ = 50211712.

The previous prime is 100423423. The next prime is 100423441. The reversal of 100423426 is 624324001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 624324001 = 7 ⋅89189143.

It can be written as a sum of positive squares in only one way, i.e., 100300225 + 123201 = 10015^2 + 351^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 100423397 and 100423406.

It is not an unprimeable number, because it can be changed into a prime (100423423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25105855 + ... + 25105858.

Almost surely, 2^100423426 is an apocalyptic number.

100423426 is a deficient number, since it is larger than the sum of its proper divisors (50211716).

100423426 is an equidigital number, since it uses as much as digits as its factorization.

100423426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50211715.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 100423426 is about 10021.1489361250. The cubic root of 100423426 is about 464.8130840075.

Adding to 100423426 its reverse (624324001), we get a palindrome (724747427).

The spelling of 100423426 in words is "one hundred million, four hundred twenty-three thousand, four hundred twenty-six".