103630421 has 4 divisors (see below), whose sum is σ = 103784172. Its totient is φ = 103476672.

The previous prime is 103630403. The next prime is 103630459. The reversal of 103630421 is 124036301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70980625 + 32649796 = 8425^2 + 5714^2 .

It is a cyclic number.

It is not a de Polignac number, because 103630421 - 2⁶ = 103630357 is a prime.

It is a super-3 number, since 3×103630421³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103630393 and 103630402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103635421) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 75860 + ... + 77213.

It is an arithmetic number, because the mean of its divisors is an integer number (25946043).

Almost surely, 2^103630421 is an apocalyptic number.

It is an amenable number.

103630421 is a deficient number, since it is larger than the sum of its proper divisors (153751).

103630421 is an equidigital number, since it uses as much as digits as its factorization.

103630421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153750.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 103630421 is about 10179.9027991430. The cubic root of 103630421 is about 469.7092225848.

Adding to 103630421 its reverse (124036301), we get a palindrome (227666722).

The spelling of 103630421 in words is "one hundred three million, six hundred thirty thousand, four hundred twenty-one".