103430421 has 24 divisors (see below), whose sum is σ = 151855704. Its totient is φ = 67829760.

The previous prime is 103430417. The next prime is 103430489. The reversal of 103430421 is 124034301.

It can be written as a sum of positive squares in 4 ways, for example, as 33524100 + 69906321 = 5790^2 + 8361^2 .

It is not a de Polignac number, because 103430421 - 2² = 103430417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103430394 and 103430403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103430321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 224131 + ... + 224591.

It is an arithmetic number, because the mean of its divisors is an integer number (6327321).

Almost surely, 2^103430421 is an apocalyptic number.

It is an amenable number.

103430421 is a deficient number, since it is larger than the sum of its proper divisors (48425283).

103430421 is a wasteful number, since it uses less digits than its factorization.

103430421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 103430421 is about 10170.0747784861. The cubic root of 103430421 is about 469.4068585287.

Adding to 103430421 its reverse (124034301), we get a palindrome (227464722).

The spelling of 103430421 in words is "one hundred three million, four hundred thirty thousand, four hundred twenty-one".