103445421 has 12 divisors (see below), whose sum is σ = 144187008. Its totient is φ = 65964184.

The previous prime is 103445417. The next prime is 103445429. The reversal of 103445421 is 124544301.

It is not a de Polignac number, because 103445421 - 2² = 103445417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103445391 and 103445400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103445429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31005 + ... + 34178.

It is an arithmetic number, because the mean of its divisors is an integer number (12015584).

Almost surely, 2^103445421 is an apocalyptic number.

It is an amenable number.

103445421 is a deficient number, since it is larger than the sum of its proper divisors (40741587).

103445421 is an equidigital number, since it uses as much as digits as its factorization.

103445421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65232 (or 65209 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 103445421 is about 10170.8122094551. The cubic root of 103445421 is about 469.4295493466.

Adding to 103445421 its reverse (124544301), we get a palindrome (227989722).

The spelling of 103445421 in words is "one hundred three million, four hundred forty-five thousand, four hundred twenty-one".