100621426 has 16 divisors (see below), whose sum is σ = 155340504. Its totient is φ = 48847104.

The previous prime is 100621403. The next prime is 100621427. The reversal of 100621426 is 624126001.

It can be written as a sum of positive squares in 4 ways, for example, as 96020401 + 4601025 = 9799^2 + 2145^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100621397 and 100621406.

It is not an unprimeable number, because it can be changed into a prime (100621427) 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, 42736 + ... + 45028.

Almost surely, 2^100621426 is an apocalyptic number.

100621426 is a deficient number, since it is larger than the sum of its proper divisors (54719078).

100621426 is a wasteful number, since it uses less digits than its factorization.

100621426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2925.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 100621426 is about 10031.0231781210. The cubic root of 100621426 is about 465.1183665988.

Adding to 100621426 its reverse (624126001), we get a palindrome (724747427).

The spelling of 100621426 in words is "one hundred million, six hundred twenty-one thousand, four hundred twenty-six".