100442530 has 16 divisors (see below), whose sum is σ = 182662200. Its totient is φ = 39762432.

The previous prime is 100442527. The next prime is 100442543. The reversal of 100442530 is 35244001.

It can be written as a sum of positive squares in 4 ways, for example, as 68508729 + 31933801 = 8277^2 + 5651^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100442498 and 100442507.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50805 + ... + 52744.

Almost surely, 2^100442530 is an apocalyptic number.

100442530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100442530 is a deficient number, since it is larger than the sum of its proper divisors (82219670).

100442530 is a wasteful number, since it uses less digits than its factorization.

100442530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103653.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 100442530 is about 10022.1020749142. The cubic root of 100442530 is about 464.8425566332.

Adding to 100442530 its reverse (35244001), we get a palindrome (135686531).

It can be divided in two parts, 1004 and 42530, that added together give a palindrome (43534).

The spelling of 100442530 in words is "one hundred million, four hundred forty-two thousand, five hundred thirty".